kakao vs Open WebUI

kakao and Open WebUI (On a mission to build the best AI user interface.) both appear on the Smoower Developer Ecosystem Index.

Open WebUI (rank #190) holds a narrow lead over kakao (rank #257) on the overall Smoower ecosystem score (50 vs 47). The gap of 3 points reflects composite signals across code, docs, community and reach.

On code quality (the state of repositories, tests, releases and polish), kakao is slightly ahead of Open WebUI. On education (docs, guides and learning material for developers), Open WebUI is clearly ahead of kakao. On community (issue response, PR reviews and discussion health), Open WebUI is slightly ahead of kakao. On reach (how visible the ecosystem is beyond its own repos), Open WebUI is slightly ahead of kakao. On momentum (release cadence and how fast the ecosystem moves), kakao is ahead of Open WebUI.

kakao carries 6,073 GitHub stars across 71 public repos, with 12 repositories active in the last 90 days and 8 external contributors on record. Open WebUI shows 159,650 stars across 25 public repos, 12 active in the last 90 days and 198 external contributors. The star gap on its own does not decide the comparison, but Open WebUI's footprint is roughly 26.3x larger, which usually shows up in downstream signals like inbound issues and third party integrations.

kakao is the stronger read for anyone weighting momentum. Open WebUI looks better where education is the deciding factor. The table below breaks the scores down pillar by pillar; the linked profiles cover the underlying repos, docs and community signals in full.