Both tagged big-data, scala.
RepoClash › Spark rivals
RepoClash · the open-source arena
spark vs delta
Spark rivals. Both tagged spark, big-data. Six rounds of real GitHub data, an AI referee, and the crowd picks a side.

apache/spark: 44,466 stars, Scala. Apache Spark - A unified analytics engine for large-scale data processing
delta-io/delta: 9,074 stars, Scala. An open-source storage framework that enables building a Lakehouse architecture with compute engines including Spark, PrestoDB, Flink, Trin…
spark vs delta: tale of the tape
GitHub data as of November 11, 2026spark has 4.9 times as many GitHub stars as delta (44,466 vs 9,074). In the last 6 days, spark gained more stars: +41 (+0.1%) against +7 (+0.1%) for delta. spark saw more development in the last 52 weeks with 5,031 commits, against 1,406 for delta. spark is the older project (created February 2014), delta started in April 2019. Both are written mainly in Scala.
| apache/spark | delta-io/delta | |
|---|---|---|
| Stars | 44,466 | 9,074 |
| Stars gained, last 6 days | +41 | +7 |
| Growth, last 6 days | +0.1% | +0.1% |
| Avg. stars per day since creation | 10 | 3 |
| Forks | 29,594 | 2,217 |
| Commits, last 52 weeks | 5,031 | 1,406 |
| Open issues | 779 | 1,027 |
| Best Repocharts rank today | #2 in Scala | #12 in Scala |
| Language | Scala | Scala |
| License | Apache-2.0 | Apache-2.0 |
| Created | Feb 25, 2014 | Apr 22, 2019 |
| Last push | Nov 11, 2026 | Nov 11, 2026 |
Quick answers
Which is more popular, spark or delta?
spark has 4.9 times as many GitHub stars as delta (44,466 vs 9,074) (Repocharts data as of November 11, 2026).
Which is growing faster, spark or delta?
In the last 6 days, spark gained more stars: +41 (+0.1%) against +7 (+0.1%) for delta.
Which is more actively developed?
spark saw more development in the last 52 weeks with 5,031 commits, against 1,406 for delta.
What languages are spark and delta written in?
Both are written mainly in Scala.
How does RepoClash compare spark and delta?
RepoClash scores both repositories in six rounds (popularity, momentum, activity, community, maintenance and freshness) from public GitHub data, adds an AI referee's verdict and lets developers vote for their favorite. Star counts are updated daily.