Expensify, Inc vs Mattermost

Expensify, Inc 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 modest lead over Expensify, Inc (rank #165) on the overall Smoower ecosystem score (62 vs 51). The gap of 11 points reflects composite signals across code, docs, community and reach.

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

Expensify, Inc carries 9,942 GitHub stars across 66 public repos, with 18 repositories active in the last 90 days and 141 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 5.0x larger, which usually shows up in downstream signals like inbound issues and third party integrations.

Expensify, Inc 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.