Open-Source Alternatives
Free Alternative to Custom GPTs
6 free & open-source projects that replace Custom GPTs.
Compare at a Glance
| vs Custom GPTs |  ruflo |  awesome-claude-skills |  harness |  unlazy |  tau |  agent-toolkit-for-aws |
|---|---|---|---|---|---|---|
| Stars | 78k | 76k | 9.2k | 3.9k | 2.9k | 2.8k |
| Forks | 9.2k | 8.9k | 1.3k | 287 | 372 | 345 |
| Contributors | 30 | 28 | 6 | 10 | 24 | 30 |
| Last Commit | Aug 21, 2026 | May 22, 2026 | May 28, 2026 | Aug 29, 2026 | Jul 9, 2026 | Jun 25, 2026 |
| License | MIT | Unknown | Apache-2.0 | MIT | MIT | Apache-2.0 |
| Language | TypeScript | Python | - | JavaScript | Python | Python |
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