← Startups in Paris
Paris Open Source 5 startups

"Open Source" Startups in Paris

Every active Paris startup we index that carries the "Open Source" tag.

All startups in Paris → "Open Source" startups nationwide →
Last updated
2026-09-02
Hiring right now 20% 1 of 5
Open roles 2
City Paris

About "Open Source" startups in Paris

Our index currently lists 5 tech startups in Paris tagged "Open Source" — a city×tag slice of the live directory, not every "Open Source" company nationwide and not every Paris startup regardless of tag. 20% of this slice is hiring right now (1 of 5). Apply links on each profile go to the company's own site; we don't act as a middleman. "Open Source" startups in Paris include Data Mechanics, Formance, nao Labs, Twenty, and Windmill. Categories represented here: Infrastructure, Dev Tools, and AI / ML. YC batches in this slice: S19, S21, Sp25, and S23, among others. Widen the view anytime: all Paris startups at /startups/location/paris, or every "Open Source" company nationwide at /startups/tag/open-source.

Data Mechanics
Data Mechanics
Spark-on-Kubernetes Data Engineering Platform
SaaSB2BOpen Source
Open Jobs —
Team 25
Founded 2019
Formance
Formance
Open Source Infrastructure for the Financial Internet
Developer ToolsFintechPayments
Open Jobs 2
Team 33
Founded 2021
nao Labs
nao Labs
Open Source Analytics Agent
AnalyticsOpen SourceAI
Open Jobs —
Team 2
Founded 2025
Twenty
Twenty
Open Source CRM
SaaSB2BOpen Source
Open Jobs —
Team 11
Founded 2023
Windmill
Windmill
Open-source platform to turn scripts into internal apps & workflows
Developer ToolsSaaSB2B
Open Jobs —
Team 7
Founded 2022
Weekly digest

Five standout startups, five open roles, every Monday

A weekly digest pulled from the 5,200+ startups and 6,700+ jobs we track. No fluff, no resend.

Double opt-in. Unsubscribe anytime.

Similar startups beyond Paris / Open Source

1 of 4 similar companies is hiring right now · most common: Engineering

↑ Trending
Supabase
Supabase
Build in a weekend. Scale to millions.
Developer ToolsOpen SourceBig Data
Open Jobs 57
Team 120
Founded 2020
Crew
Crew
Next Gen ATS/CRM for Modern Recruitment Agencies
RecruitingSales EnablementTalent Acquisition
Open Jobs —
Team 6
Founded 2021
Moby Analytics
Moby Analytics
AI financial auditors
Artificial IntelligenceAutomation
Open Jobs —
Team 4
Founded 2025
RecipeUI
RecipeUI
The open source Postman alternative.
Developer ToolsOpen SourceAPI
Open Jobs —
Team 2
Founded 2023

Related startup slices

All startups in ParisEvery tag"Open Source" startups nationwideEvery city"Open Source" startups in San Francisco90 startups"B2B" startups in Paris16 startups"SaaS" startups in Paris15 startups"Open Source" startups in New York City14 startups"Artificial Intelligence" startups in Paris10 startups"Open Source" startups in London9 startups"AI" startups in Paris9 startups"Developer Tools" startups in Paris7 startups

Frequently asked questions

How many "Open Source" startups are in Paris?

Our index currently tracks 5 active tech startups in Paris tagged "Open Source". Counts move as scrapers discover new companies and flag shutdowns inactive.

Which "Open Source" startups are based in Paris?

Companies on this page include Data Mechanics, Formance, and nao Labs, plus 2 more below. Each profile links to the company's site and any open roles we scrape.

How is this different from the Paris startups page or the "Open Source" tag page?

/startups/location/paris lists every indexed startup in Paris across tags. /startups/tag/open-source lists every "Open Source" startup nationwide. This page is the intersection — only companies that resolve to both Paris and "Open Source".

Are these Paris "Open Source" startups hiring?

1 of the 5 companies on this page currently have open roles in our jobs index.

How often is this list updated?

Automated scrapers refresh on the same daily cadence as the rest of the directory. The last index update was 2026-09-02.