Developer ecosystem comparison
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Stream vs Klarna

Developer ecosystem comparison across GitHub activity, SDKs, documentation, community, reach and momentum.

Stream (Build scalable in-app chat, feeds, and live video with AI moderation capabilities in hours, not weeks.) and Klarna both appear on the Smoower Developer Ecosystem Index.

Klarna (rank #257) holds a narrow lead over Stream (rank #317) on the overall Smoower ecosystem score (47 vs 44). 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), Stream is slightly ahead of Klarna. On education (docs, guides and learning material for developers), Klarna is clearly ahead of Stream. On community (issue response, PR reviews and discussion health), Stream is ahead of Klarna. On reach (how visible the ecosystem is beyond its own repos), Klarna is clearly ahead of Stream. On momentum (release cadence and how fast the ecosystem moves), Stream is clearly ahead of Klarna.

Stream carries 35,664 GitHub stars across 487 public repos, with 84 repositories active in the last 90 days and 44 external contributors on record. Klarna shows 2,965 stars across 139 public repos, 8 active in the last 90 days and 2 external contributors. The star gap on its own does not decide the comparison, but Stream's footprint is roughly 12.0x larger, which usually shows up in downstream signals like inbound issues and third party integrations.

Stream is the stronger read for anyone weighting momentum. Klarna 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.

Side-by-side metrics

MetricStreamKlarna
Ranking
Overall rank#317#257
Pillars
Overall4447
Code6457
Education5476
Community4931
Reach2364
Momentum8216
Builder experience00
Signals
Stars35,6642,965
Forks5,186737
Public repos487139
Active repos (90d)848
External contributors442
Avg polish7453
Avg AI-readiness4738

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