Mattermost vs TaxJar

Mattermost (Mattermost is a secure collaboration platform for connecting your teams, tools and processes to accelerate mission-critical work.) and TaxJar (Making sales tax filing easier for more than 20,000 online sellers and merchants across the world.) both appear on the Smoower Developer Ecosystem Index.

Mattermost (rank #38) holds a meaningful lead over TaxJar (rank #693) on the overall Smoower ecosystem score (62 vs 31). The gap of 31 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 TaxJar. On education (docs, guides and learning material for developers), TaxJar is slightly ahead of Mattermost. On community (issue response, PR reviews and discussion health), Mattermost is clearly ahead of TaxJar. On reach (how visible the ecosystem is beyond its own repos), Mattermost is clearly ahead of TaxJar. On momentum (release cadence and how fast the ecosystem moves), Mattermost is clearly ahead of TaxJar.

Mattermost carries 49,882 GitHub stars across 262 public repos, with 58 repositories active in the last 90 days and 105 external contributors on record. TaxJar shows 490 stars across 39 public repos, 1 active in the last 90 days and 3 external contributors. The star gap on its own does not decide the comparison, but Mattermost's footprint is roughly 101.8x larger, which usually shows up in downstream signals like inbound issues and third party integrations.

Mattermost is the stronger read for anyone weighting reach. TaxJar 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.