The request names GDBM, the GNU database manager, which is not itself among the candidates. The closest candidate is Python's gdbm module, documented as part of the standard library 1. Alternatives that do key-value storage, the same job GDBM does, include Redis 2, Valkey 6, and TinyCDB, a constant database with an API similar to gdbm's 10.

1. 1

   Python gdbm modulepython.orgwebsite read, tools not yet checked

   Python's standard library documentation covers the gdbm module, a Python binding for the GNU database manager key-value store.

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2. 2

   Redisredis.ioverified and signed

   Redis is a key-value store whose action dbsize returns the number of keys stored in the database.

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   official:MCP server · Redis MCP ServerSDK · redisskill · redis-coreSDK · redis+32 community tools built for it

   for agents: key-value-store · dbsize · database

3. 3

   Valkeyvalkey.ioverified and signed

   Valkey is an open source BSD-licensed key/value datastore that can act as a primary database.

   WebsiteDocs

   +1 community tools built for it

   for agents: database · key-value · Valkey

4. 4

   TinyCDBcorpit.ruwebsite read, tools not yet checked

   TinyCDB is a constant database package with an API similar to gdbm's, but it cannot be updated at runtime, only rebuilt.

   Website