607 Open Source SaaS Companies in 2026
Open source SaaS companies publish their code in the open and sell a hosted cloud, enterprise features or support on top: databases, developer tools, AI models and business apps.
- Companies
- 607
- In LeadWave's database, October 2026
- Total funding raised
- $27.4B
- Across 193 funded companies
- Median headcount
- 17
- Of 474 with a known headcount
- Median year founded
- 2017
- Of 508 with a known year
The largest Open Source SaaS companies
The top 30 of 607, strongest matches first, then by size. Headcount is the latest known figure.
| Company | Website | Employees | Headcount | Funding | CEO | |
|---|---|---|---|---|---|---|
1 MongoDB | mongodb.com | 1,001–5,000 | — | $311M | Dev Ittycheria | |
2 Elastic | elastic.co | 1,001–5,000 | 2,808 | $162M | Ashutosh Kulkarni | |
3 Odoo | odoo.com | 1,001–5,000 | 1,881 | $104.1M | Fabien Pinckaers | |
4 GitLab | gitlab.com | 1,001–5,000 | 1,569 | $434.2M | Sid Sijbrandij | |
5 WSO2 | wso2.com | 1,001–5,000 | 1,034 | $130.5M | Sanjiva Weerawarana | |
6 Z.ai | z.ai | 501–1,000 | 990 | $1.3B | Damian Zhang | |
7 Grafana Labs | grafana.com | 501–1,000 | — | — | Raj Dutt | |
8 Hugging Face | huggingface.co | — | 627 | — | Clem Delangue | |
9 n8n.io | n8n.io | 11–50 | 589 | $13.5M | Jan Oberhauser | |
10 Sonatype | sonatype.com | 201–500 | 431 | $154.7M | Wayne Jackson | |
11 YugaByte | yugabyte.com | 201–500 | — | — | Karthik Ranganathan | |
12 MiniMax | minimax.io | 201–500 | 320 | $202.9M | Yeyi Yun | |
13 Camunda | camunda.com | 201–500 | 318 | $126.2M | Jakob Freund | |
14 Mend.io | mend.io | 201–500 | 304 | $121.2M | Ron Rymon | |
15 Kimi AI by Moonshot AI | kimi.ai | 201–500 | 300 | $10.2M | — | |
16 Supabase | supabase.com | 11–50 | 248 | — | Paul Copplestone | |
17 Logz.io | logz.io | 201–500 | 239 | $121.9M | Tomer Levy | |
18 Deepgram | deepgram.com | — | 223 | — | — | — |
19 InfluxData | influxdata.com | 201–500 | 210 | $119.9M | Paul Dix | |
20 Astronomer | astronomer.io | 51–200 | 183 | $68.3M | Pete DeJoy | |
21 Mattermost | mattermost.com | 51–200 | 174 | $70M | Ian Tien | |
22 Airbyte | airbyte.io | 51–200 | 159 | $100M–500M | Michel Tricot | |
23 Firebolt | firebolt.io | 51–200 | 153 | $164M | Eldad Farkash | |
24 Kimble Applications | kimbleapps.com | 51–200 | 152 | — | Michael Speranza | |
25 PostHog | posthog.com | 11–50 | 147 | $10M–50M | James Hawkins | |
26 eXo Platform | exoplatform.com | 51–200 | 143 | $7.2M | Veronika Mestrallet | |
27 3CX | 3cx.com | 51–200 | 143 | — | Nick Galea | |
28 DeepSeek | deepseek.com | — | 141 | $7.4B | Ryan Azhari | |
29 HashiCorp | hashicorp.com | — | — | — | — | |
30 Confluent | confluent.io | — | — | — | — |
Open Source SaaS companies at a glance
- 55% are headquartered in United States, followed by France.
- The largest is MongoDB, with 1,001–5,000 employees.
- 193 have disclosed funding, $27.4B in total; 33 raised $100M or more.
- Half were founded before 2017, and 31% in 2020 or later.
- United States312 · 55%
- France29 · 5%
- Germany28 · 5%
- United Kingdom26 · 5%
- Canada22 · 4%
- India22 · 4%
- 1–10222 · 41%
- 11–50191 · 35%
- 51–20091 · 17%
- 201–50018 · 3%
- 501–1,00010 · 2%
- 1,001–5,00011 · 2%
- 5,001–10,0000 · 0%
- 10,000+0 · 0%
- Before 200016 · 3%
- 2000–200951 · 10%
- 2010–2014101 · 20%
- 2015–2019185 · 36%
- 2020–2022120 · 24%
- 2023 or later35 · 7%
- Under $1M39 · 19%
- $1M–5M44 · 22%
- $5M–10M19 · 9%
- $10M–50M48 · 24%
- $50M–100M18 · 9%
- $100M–500M25 · 12%
- $500M–1B3 · 1%
- $1B+7 · 3%
How this list was built
A company is on this list if LeadWave tags it as open source or an open LLM, or its description or website presents open source or self-hosted software.
The data comes from LeadWave's database of SaaS and AI companies, last updated in October 2026. Companies that share a website are counted once. Headcount, funding and CEO come from public sources, so some fields are blank for smaller companies.
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Frequently asked questions
LeadWave's database lists 607 Open Source SaaS companies as of October 2026. This page shows the 30 largest; the full list, with CEO contacts, is part of our 15,000+ SaaS companies list.
By headcount, MongoDB, with 1,001–5,000 employees, followed by Elastic and Odoo.
United States: 55% of those with a known headquarters, followed by France at 5%.
DeepSeek ($7.4B), Reflection AI ($4.6B) and Thinking Machines Lab ($3B), by total disclosed funding.
LeadWave's SaaS companies list covers 15,000+ companies and 16,000+ CEOs, with verified CEO emails, LinkedIn profiles, headcount and funding in one CSV. It's on the List of SaaS Companies page.
Most sell the same software as a managed cloud service, so customers don't have to run it themselves. Others sell enterprise features such as single sign-on, audit logs and support (open core), or a commercial license for companies that can't use the open one.