Intercom vs Mattermost

Intercom and Mattermost (Mattermost is a secure collaboration platform for connecting your teams, tools and processes to accelerate mission-critical work.) both appear on the Smoower Developer Ecosystem Index.

Mattermost (rank #38) holds a narrow lead over Intercom (rank #82) on the overall Smoower ecosystem score (62 vs 57). The gap of 5 points reflects composite signals across code, docs, community and reach.

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

Intercom carries 3,761 GitHub stars across 190 public repos, with 56 repositories active in the last 90 days and 16 external contributors on record. Mattermost shows 49,882 stars across 262 public repos, 58 active in the last 90 days and 105 external contributors. The star gap on its own does not decide the comparison, but Mattermost's footprint is roughly 13.3x larger, which usually shows up in downstream signals like inbound issues and third party integrations.

Intercom is worth a look for teams already invested in its stack. Mattermost looks better where reach 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.