Who really funds open source.
A row starts at zero. Only a published dollar moves it: a pledge, a collective, a GitHub tier you can actually see. WhoFundsOSS reads the public record once a month. It does not guess.
$9.3M
Public floor, top 200
200
Companies ranked
839
In the file, after filters
This collection · not a delta
What the snapshot can actually say.
- 01PositLeads the public record at $762.4k. $750.1k of that is the 2025 pledge. $12.3k is cumulative Open Collective, not a yearly run-rate.
- 02Sentry$750k through the Open Source Pledge, and 30 GitHub beneficiaries. None of those tiers publish an amount. The pledge is not counted a second time.
- 03Named nowhereZerodha, HeroDevs, Bolt, Antithesis publish pledge dollars and name zero projects.
- 04MicrosoftThe public total is $10k, a cumulative gift to webpack. The score sits next to that number on purpose. Alone, it lies.
Top 10 companies funding open source
See all| Rank | Company | Projects | Public $ | Sources |
|---|---|---|---|---|
| 1 | Posit | 4 | $762.4k | OC · Pledge |
| 2 | Sentry | 30 | $750k | GitHub · Pledge · Program |
| 3 | CodeRabbit | 104 | $602.6k | GitHub · OC · Pledge |
| 4 | trivago | 3 | $462k | OC |
| 5 | ZerodhaNo named projects | 0 | $323.3k | Pledge |
| 6 | AG Grid | 3 | $317.5k | GitHub · OC · Pledge |
| 7 | General Catalyst | 1 | $250k | OC |
| 8 | Frontend Masters | 22 | $238.7k | GitHub · OC · Pledge · Program |
| 9 | Sanity | 9 | $195.2k | OC · Pledge |
| 10 | HeroDevsNo named projects | 0 | $160k | Pledge |
Company search
Annual report · labeled
Cumulative total · labeled
Four sources. No invention.
Hidden GitHub tiers stay hidden.
A monthly amount is never annualized. A private sponsorship never becomes a guess. The same pledge dollar is not counted again as an own program.
581
Open Collective
37
Pledge
281
GitHub
10
Own program
- Public dollar amount
- Named projects
- Source of the figure
- What stayed private
A line has to earn its number.
If the tier is hidden, the row stays at zero. The dollar does not. Cumulative gifts stay marked cumulative. Nothing here is annualized to look larger.
Limits, in one breath
The amount you can see is not the amount that moved.
$9.3M across the top 200 is a floor. Spam and one self-fund were taken out before this file was published.
Read the methodFeatured record this collection: Posit. A featured line is labeled. It does not move a rank. Featured placement is $199–399 for 7 days. A sponsoring audit is $490 or $990. Neither writes a number that was not already public.