Side by side

Open Source Startups vs StartupDB

Both stand on startup databases. Which one you can start free with, which one lets you read the code, and what each costs once you pay.

Open Source Startups

Free plan Web

Choose Open Source Startups if you want a searchable directory of open-source projects, alternatives, and public APIs, with project details and category filters. Its collections and alternative guides add more ways to explore. Look elsewhere if you need export access or company profiles.

Visit Open Source Startups

StartupDB

Free plan APIWeb

StartupDB offers sourced company and investment records alongside free, read-only API access. Treat missing records as gaps in the database, not proof that an event or investor does not exist.

Visit StartupDB

The facts

	Open Source Startups	StartupDB
Free plan	Yes	Yes
Open source	Not published	Not published
Runs on	Web	API, Web
Lowest paid plan	Not published	Free or on request
Plans published	None	1
Maker	Not published	Not published
Website	opensourcestartups.com	startupdb.com
On startup databases	#15 of 26	#11 of 26

Open Source Startups: what it does well

Searches project descriptions and supports browsing by language, category, or popularity.
Listings include GitHub stars, forks, language, license, and topics.
Automatic GitHub syncing refreshes project details.
Includes 16 themed collections and 334 alternative guides.
Lists 1,580 free public APIs across 52 categories.

What to know first

The directory is available on the web.
It offers no export access.

StartupDB: what it does well

Free MCP server and REST API need no account or key.
Records link facts to their sources.
Searches cover startups, investors and people.
Commercial reuse is allowed with attribution.

What to know first

The database does not claim complete coverage.
Access is limited to 120 requests per minute per IP.
Third-party logos, photos and site text are excluded from the license.

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