Since 1995 · 31 years · 31 ideas

What I've
built.

From bootstrapping my first startup right out of university to leading international prize winning companies, I've gathered a treasure trove of insights. And now, I’m ready to open up my vault of knowledge to you.

Mathys as your advisor

31 ideas, in order.

Some cried. Some didn't. A few wept for joy. Every idea since 1994, with how it went. The ones with a story on the timeline link to it.

Tears of joy
11
Didn't cry
7
Cried a lot
7
Still running
6
  1. 01 CDR Mania 1994 · Didn't cry
  2. 02 Safe Trans 1996 · Cried a lot
  3. 03 Horeca MP3 1997 · Tears of joy
  4. 04 Van Abbe IT 1995 · Tears of joy
  5. 05 Van Abbe CM 1997 · Tears of joy
  6. 06 Theseus & Ariadne 1998 · Didn't cry
  7. 07 Internet-1-stop-shop 1998 · Didn't cry
  8. 08 Up2date 1996 · Tears of joy
  9. 09 Tribe-Y 2001 · Cried a lot
  10. 10 Mobypicture 2004 · Still running
  11. 11 Pauze Media Still running
  12. 12 P-Pill Still running
  13. 13 Satiboshop Cried a lot
  14. 14 Telgo Tears of joy
  15. 15 Toading 2005 · Tears of joy
  16. 16 Favico.nz 2006 · Didn't cry
  17. 17 ABC Still running
  18. 18 Billingstreet 2006 · Cried a lot
  19. 19 Inspector Ticket Cried a lot
  20. 20 Subwayk Cried a lot
  21. 21 Spot2be 2007 · Didn't cry
  22. 22 Startpix Tears of joy
  23. 23 Twittersoap Didn't cry
  24. 24 Mobypicture 2007 · Didn't cry
  25. 25 MobyNow 2010 · Tears of joy
  26. 26 Tag The Love 2012 · Tears of joy
  27. 27 Týrsday Tears of joy
  28. 28 Makers Republic Still running
  29. 29 Biko 2013 · Tears of joy
  30. 30 Kinder 2017 · Cried a lot
  31. 31 Playbook 2024 · Still running

Since 2026: building with AI

6 ideas so far

AI coding agents changed what a one-person company can afford to make. Fifteen projects in thirty-one days; these are the ones with a name.

  • to:co 2026 · Still running
  • Journall 2026 · Still running
  • Kairos 2026 · Still running
  • Early Birds 2026 · Still running
  • AirBuild 2026 · Still running
  • LeeLoo 2026 · Still running

The timeline.

The ideas that left a trail in the press and the archives, drawn as lines that start, run alongside each other and sometimes end. Open a moment for the story and its sources.

1994

Sep FoundedDidn't cry Leiden, and CDR Mania Starts Astronomy at Leiden University. CDR Mania, burning and selling CD-Rs, is the first idea; computer help for fellow students comes free, paid in bottles of wine and whiskey.

The student years produced a run of small businesses: Safe Trans, Horeca MP3, Van Abbe IT and Van Abbe CM, Theseus & Ariadne, an internet one-stop-shop, Up2date. The degree was never finished; the web won.

1995

FoundedTears of joy Van Abbe IT: the first registered company One year into university, after being paid in bottles for computer help and fixes, it seemed smarter to ask for money. Registers a sole proprietorship at 21 and starts building and selling OEM computers and networks.

Van Abbe IT was the legal home of the student-era work: repairs, custom-built PCs and small networks, sold to students and the elderly alike.

1996

Jan FoundedTears of joy Up2date: borrowed money, a room full of computers A year after registering the company he takes out a loan, buys a set of computers and starts a computer course for students and the elderly.

The course ran alongside Van Abbe IT: the same people who came to learn also bought their first PC there.

FoundedCried a lot Safe Trans: drive you home in your own car With Ruud Vriens, a housemate from the Wallon, the infamous student house in Leiden. Students on call, dispatched in pairs to the fancy restaurants in town, to drive guests home in their own cars after a dinner with more wine than the drive back allowed.

One student drove the guest's car, the other followed to bring the driver back. A service the ride-hailing apps would reinvent two decades later. It cried a lot.

1997

Jun FoundedTears of joy Van Abbe CM: the first SaaS, at 49 guilders a month A content management system built with Robin Blokker that turned any static website into a dynamic, database-driven one. Sold as a subscription for 49 a month.

Before it, changing a line on your website meant paying a developer by the hour, which cost far more than a month of Van Abbe CM. Software sold as a monthly service, years before the term SaaS existed.

FoundedTears of joy Horeca MP3: music for bars, before streaming Sold computers to restaurant and bar owners to play MP3s in their establishments, after digitising their CD collections. The first to offer it.

This was before touchscreens and before streaming services existed. The CDs were ripped, the MP3s transferred to a computer in the venue, and playlists built with players like Winamp. A pioneering service in an industry that would only later go digital.

1998

Mar FoundedDidn't cry Internet One Stop Shop With a Rotterdam 'supergroup': one of the first full-service digital shops in the Netherlands, where a company could get its whole internet strategy, backend, hosting and design in one place.

For most companies in the late nineties the step onto the internet was a maze. The collective behind the One Stop Shop brought Rotterdam's internet pioneers and its design avant-garde together: Hard Werken founders Willem Kars and Rick Vermeulen on concept and design, methodologists Robert Kerssing and Peter Schoo on backend, database architecture and information routing, Mathys on business development and application build with Willem van den Ende of provider IPR on hosting, and innovator Marianne Ketting on strategy.

PartnersIPR
Sep AwardDidn't cry Theseus & Ariadne, and a KvK Aanmoedigingsprijs Out of the One Stop Shop came its own software: a fully automatic, tailored digital 'knipselkrant' for a company's sector, a thread of Ariadne through the pre-Google data chaos. The Rotterdam Chamber of Commerce gave it an encouragement prize.

The prize was presented in person by entrepreneur and art collector Joop van Caldenborgh. The combination of technical infrastructure, clean logic and high-end design laid a foundation for Rotterdam's early creative digital industry, long before search engines were commonplace.

Awarded byKvK Rotterdam

1999

Milestone Silicon Valley in the dot-com boom A client sends him to California as the link between management and engineers. He comes back all-in on the web.
Sourcesmathys.to

2001

Feb FoundedCried a lot Tribe-Y, a student community before Hyves Co-founder, with Eddie Westbroek, of the student portal started by Wouter Durville, Auke Ferwerda and Sietse in late 2000. Seeded by the Twinning incubator; it did not survive the burst bubble.

A site for, by and of students, with local student marketing teams in the big student cities and members shaping the content through clubs and message boards. Twinning put in 400,000 guilders before there was anything to show; staff and costs grew until new money was needed, and none came. Emerce later called it a forerunner of Hyves. The only archived page is the February 2001 teaser promising the site would go live in a few days.

Backed byTwinning

2003

Founded Mobypicture, first attempt Starts Mobypicture with Rogier van Duyn. Too early: he buys out his partner and puts it in the fridge.

Sending a photo from a phone to the web was slow and expensive. The idea waited for flat-fee mobile data and the iPhone. His own list dates this first version to 2004.

2005

8 Sep FoundedTears of joy Toading launches With Iwan Luiten: a client's whole catalogue turned into thousands of specific search ads. Interhome's 20,000 holiday homes are the first.

Emerce reported on the new Amsterdam company on 8 September 2005. Each property became its own ad with star rating, occupancy and live availability, linking straight to the right page.

Launch customerInterhome

2006

Mar FoundedDidn't cry Favico.nz: every website's icon, one API call A simple API that returned the favicon of any URL in the world. Built for Startpix, then picked up by other platforms that wanted to show links visually.
Sep FoundedCried a lot Billingstreet: Moneybird avant la lettre Online invoicing for small businesses, years before Moneybird made it a category. It cried a lot.

2007

Jan MilestoneDidn't cry Mobypicture comes out of the fridge Flat-fee mobile data and the iPhone make it viable. One upload posts to Twitter, Flickr, Hyves and Facebook at once.

Mobypicture was the first service to post photos to Twitter. The company ran from a houseboat on the Amstel.

Mar FoundedDidn't cry Spot2be: a tiny URL for a place A short-URL service for spots you wanted to share. Enter an address or a latitude and longitude and get a tiny link to that exact spot, easy to text to a friend.
9 May In the press KLM takes Toading to nine countries From the UK and Norway to nine markets, with ads that track flight offers and prices in real time.

Two years old, five people, funded from its own cash flow and adding at least two clients a month: Medion, Careerfactory, Warenhuisservice, GSM.nu, InterHome. Later clients include Reed Elsevier, Overtoom and Intermediair.

ClientsKLMInterhomeMedionReed ElsevierOvertoomIntermediair

2008

Sep Award Vodafone Mobile Clicks finalist Mobypicture is one of six finalists for the €100,000 prize.

2009

7 Jul In the press TechCrunch: Mobypicture expands to the UK and Germany About 100,000 users, a business model of premium services, white-label and publisher deals, and a houseboat office.

That year Mobypicture was runner-up at Vodafone Mobile Clicks and received a Red Herring award. From 2009 Mobypicture became his main focus; Toading kept running in the background.

25 Nov Award Online Media Man of the Year Named at the Adwards during IAB Nederland's Interact congress, by public vote and an industry jury, for Mobypicture.

Presented on 25 November 2009 at Het Sieraad in Amsterdam, alongside Marjolijn Kamphuis as online media woman of the year.

2010

Jun FoundedTears of joy MobyNow: own the conversation Gather everything people post about you on one page you own. First platform with Rabobank; Holland MobyNow draws 270,000 views during the World Cup.

Built in a day for the Dutch team, the World Cup page attracted three sponsors off a single tweet. Silicon Valley Watcher, where he presented it in July, called it a next stage in website development.

Launch partnerRabobank
LinesMobyNow · Tag The LoveMobypicture

2011

26 Apr In the press The Next Web runs its conference on MobyNow TNW2011's backchannel aggregates every post about the conference; Rabo Cycling adds MobyNow so fans can follow the riders on a map.
ClientsThe Next WebRabobank
Jul Milestone Vodafone: Start Internet op Reis Vodafone's national roaming campaign is built around the Mobypicture app, on bus shelters across the country.

The poster shows the moby logo on an HTC screen above the line 'In 42 landen online. €2 per dag.' That year he was also named Dutch Startup Founder of 2011.

ClientVodafone

2012

14 Jun Milestone Feed the Lions at Cannes With Tribal DDB Amsterdam: a live page gathering every #canneslions post, photo and video. The first of three festivals.

Fifty festival ambassadors were given portable WiFi to keep uploading from the parties.

PartnersTribal DDBCannes Lions
LinesMobypictureMobyNow · Tag The Love
Aug In the press London 2012: the Holland Heineken Huis screens Photos and tweets tagged #HHH2012 pulled in by Mobypicture, ranked among SportNext's ten highlights of the Games.

Mobypicture was approaching two million users.

ClientHeineken
Dec MilestoneTears of joy MobyNow becomes Tag The Love The platform takes its new name; tagthelove.com is first archived on 30 December 2012.

Over the following decade it became the engine under hundreds of sites: rabosport.nl, the Rotterdam Port Fund, the artist Tinkebell, Kinder World, Movement on The Ground, V2 Records, Before The Flood.

ClientsRabobankRotterdam Port FundTinkebellMovement on The GroundV2 RecordsBefore The FloodAEGONDanoneNPO 3FMTEDxNOC*NSFIntel

2013

Jun FoundedTears of joy Biko: influencer strategy before the word existed A joint venture with Marnix Geus of Het PR Bureau and strategist Omar Kbiri: one of the first influencer-focused agencies in the Netherlands, with Mobypicture's technology pushing creators' content straight to the web and social.

While brands were still buying traditional ads, Biko managed and professionalised early YouTube talents, bloggers and online creatives and matched them with brands. Its best-known work was Sranan Gowtu, pairing soft-drink brand Fernandes with record label Top Notch to celebrate Surinamese musical heritage, with nine million cans carrying the artists' portraits. Clients and talents included Arie Boomsma, Kakhiel, Top Notch and Vodafone. Omar Kbiri later carried the influencer and content work on under his agency Maak.

ClientsFernandesTop NotchVodafoneArie BoomsmaKakhiel
LinesMobyNow · Tag The LoveMobypicture

2015

May Milestone Five million Mobypicture users Still without advertising. Tag The Love runs on 450+ sites.
Oct Founded The Kinder idea A 'good causes app': swipe through charities, give a little to the ones you like.

It grew out of Peter's Pan, his long-running thinking about children, talent and technology.

2016

Jan Wound downTears of joy Toading wound down Profitable to the end, but it never cracked the UK and US. He signs the dissolution papers and writes up seven lessons.

Align ambitions with a partner, choose a strong launch customer, have a real local presence abroad rather than a sales trip.

Aug MilestoneTears of joy Týrsday at the Rio Olympics A sister agency on the Tag The Love platform runs athletes' social accounts during the Games.

Týrsday also built sites such as the Rotterdam Port Fund's, which still carries its credit in the footer.

Oct Milestone Kinder opens its office at TQ The question at its core: which charities actually work? With Impact Center Erasmus, 1,500 organisations vetted by end of 2017.
PartnersTQImpact Center Erasmus
SourcesRaising

2018

15 Mar Milestone First outside round Six impact investors close Kinder's first round; ten backers by 2019.

The first company he ever raised outside money for.

7 Aug Milestone Create and Remix Tag The Love releases Create, a content-management assistant, and Remix for saving anything online into a post. 600+ platforms built since 2010.

2020

Sep In the press 3,500 charities vetted; investors add €525,000 Existing investors put in another round, €150,000 of it his own. Then Covid lands in the middle of everything.

2021

Jul MilestoneCried a lot Bankruptcy, buy-back, restart Six months of talks over €1.4M collapse in June. He files himself so staff are paid, buys the platform back a month later, and continues leaner.

His lessons, stated publicly: negotiate faster, keep the shareholder group small, show the vision earlier, leave more room to find product-market fit. He does not call it a failure.

2023

Nov Milestone Playbook takes shape Development starts in November 2023, grown out of two pilots with Deutsche Telekom's culture team.

The problem he observed: remote teams that had lost the glue of the office.

Pilot clientDeutsche Telekom

2024

Founded Playbook kicks off Gamified behaviour-change tools for teams, officially launched in 2024. Deutsche Telekom and the municipality of Zaanstad are the first clients.

Playbook is his main focus today: gaining momentum, still early, in his own January 2026 words.

ClientsDeutsche TelekomGemeente Zaanstad

2026

Jan Founded The AI building era begins Building with AI coding agents changes what a one-person company can afford to make. Many small products, shipped in parallel.
Apr Milestone Fifteen projects in thirty-one days With AI coding tools the scarcity filter is gone; the question becomes which ideas deserve to exist.

In development: to:co, Journall, Kairos, Early Birds, AirBuild and LeeLoo, a Dutch legal assistant for contracts.

Today

Work with me.

The slide above says it all.

30 ideas in 30 years.

Some made headlines. Some made me cry. All made me better.

Ideas? Everyone has them.

But building something real—that takes unreasonable optimism, relentless grit, and years of sleepless execution.

Here’s the hard truth:

40% of companies don’t make it past 3 years.

Half are gone by year 5.

Two-thirds by year 10.

And by year 20? Just 1 in 5 survives.

So why am I still here?

Because I didn’t just start companies. I finished what I started. From bootstrapping my first startup during my Astronomy studies—

To Mobypicture powering media giants—

To winning a Webby, a Red Herring Award, and being named Founder of the Year by The Next Web—

I’ve built, scaled, and (sometimes) crashed ventures across the spectrum.

Now, I’m opening the vault.

Not to share ideas.

But to help others master the hardest part of all:

Execution. Execution. Execution.

SO What do you need as a founder?

More than advice.
You need someone who’s been in the arena—who knows when to push, when to pivot, and when to shut up and listen.

Effective advisors don’t just share experience.

They bring perspective, momentum, and networked leverage.

They see the blind spots you can’t—and help you act before they become costly.
That’s what I offer: a strategic partnership.

From raising the right money at the right moment,
to nailing your first hires and product focus,
to making the hard decisions before they become regrets.

I’ve learned these lessons the long, expensive way.

  • Like the time I gave the worst pitch of my life—and what it taught me about storytelling and investor psychology. (The worst pitch ever)

  • Or the 7 painful (but funny) lessons from “Toading”—a concept that still stings. (7 lessons of Toading)

  • And how we brought Kinder back from the edge, rethinking everything from team to mission (as featured in MT/Sprout). (Dutch - MT/Sprout)

Most startup deaths are not murders. They’re slow suicides by distraction. Founders spend too much time perfecting the wrong thing, chasing the wrong signal, or listening to the wrong people.

What Founders Actually Get

Here's what partnering with me looks like:

I help early-stage founders cut through the noise and focus on the things that matter now. Whether you’re pre-product, post-MVP, or raising your first round, I help you:

  • Monthly Strategy Sessions (2-4 hours): Deep dives into your business challenges and growth opportunities.
  • Unlimited Access: Email, calls, and even WhatsApp messages for those urgent matters and quick feedback needs.
  • Find product-market resonance faster

  • Design a razor-sharp narrative that investors can’t ignore

  • Avoid the distractions that kill momentum

  • Make your next 100 days radically more effective

  • Plug into a high-trust network that accelerates hiring, funding, and distribution

This isn’t just advice. It’s hands-on execution support from someone who’s been through every cycle—25+ times.

Help with:
Think of me as your co-pilot when things get complex—or just need to move faster.

✅ Mentoring & founder support

✅ Strategic troubleshooting

✅ Product & business model design

✅ Tech development & AI integration

✅ Fundraising guidance

✅ Finding the right co-founder

✅ Making smart, timely decisions

Plus, I open my network.

Not just names in a Rolodex—real connections in:

  • Design & product development

  • Engineering & AI

  • Angel investors & funds

  • Operators across media, health, tech, culture, and beyond

A Cross-Pollinating Network Built Over Decades

I don’t just know people—I connect ecosystems.

With over 10,000+ high-trust connections, I tap into a uniquely diverse network that spans industries, disciplines, and perspectives. This means warm intros, unexpected opportunities, and faster problem-solving.

Industries I actively bridge:

  • 🚀 Tech, Startups, Investors & Founders

  • 🎯 Advertising, Media Buying, Creative Agencies

  • 🌍 Philanthropy, NGOs & Social Impact

  • ✈️ Travel, Lifestyle & Hospitality

  • ⚽ Sports & Athlete Brands

  • 📺 Media, Television & Film

  • 🧠 Education & EdTech

  • 🌐 Web3 & Decentralized Innovation

I don’t believe in silos. Some of the best ideas come from unexpected places—and my network is designed to spark them.

To wrap it up—there’s a brilliant video by David Dunning (of the Dunning-Kruger effect fame): “Why incompetent people think they’re amazing.”

It’s a stark reminder of how easy it is to overestimate yourself—and how costly that can be when you’re building a company.

That’s where I come in.

With 25+ startups behind me and two decades of mentoring founders, I’ve developed a sharp radar for blind spots. I won’t just tell you what you want to hear—I’ll help you see what you’re missing, and focus on what actually moves the needle.

Because your time, your runway, and your shot at success deserve more than well-meaning guesswork.

"The founding of Tag The Love was the most important opportunity for us to engage the Rabobank Cycling team fans all over the world. Since then we have build a dozen more platforms amongst which one for the National Dutch Field Hockey teams and for our Olympic campaigns."sponsor manager Rabobank

"Mathys has a fantastic sixth sense for the business of technology. New frontiers where technology, market and businesses meets are the places he feels very much at home. If you need a commercial thinker or a solid partner for realizing your new business, Mathys is the person you should talk to first.

"Mathys is a creative highly experienced professional in the Internet and online advertising domains. Dedicated to all the projects he works on. I hope to stay in contact with Mathys for many years to come and build successful deal in the near future such as Transavia.com."

"Mathys has a true feeling for business and knows how to stimulate people to excellerate their perfomances. Besides that he has great knowledge in the IT/Internet branch and he and his companies survived the Dot-Com Bubble of the '90s." :)