head to head · open source
Prometheus vs efcore
Prometheus has 66,906 GitHub stars, 10,969 forks, 890 open issues and last shipped yesterday. efcore has 14,814 stars, 3,452 forks, 2,343 open issues and last shipped yesterday. Prometheus leads on adoption by 352% (66,906 vs 14,814 stars). Prometheus is written in Go under Apache-2.0; efcore is written in C# under MIT. Prometheus has attracted 16% as many forks as stars, efcore 23%. Prometheus was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 1 topic tag (hacktoberfest), so they are genuine substitutes rather than adjacent tools.
Two open source projects, one decision. Both are free and self-hostable — the differences are community size, license terms, language stack and release pace.
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Side by side
| Prometheus | efcore | |
|---|---|---|
| GitHub stars | ★ 67K | ★ 15K |
| License | Apache-2.0 | MIT |
| Written in | Go | C# |
| Last push | 2026-11-02 | 2026-11-02 |
| Forks | ⑂ 11K | ⑂ 3.5K |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick Prometheus if
- You weight community size — 67K stars and counting
- You want the Apache-2.0 license terms
- Your stack matches Go
- You value the larger contributor base for long-term maintenance
pick efcore if
- You want the efcore feature set and don't need the biggest community
- You prefer the MIT license terms
- Your stack matches C#
- You evaluated both and efcore fits your workflow better
About Prometheus
Prometheus Visit prometheus.io for the full documentation, examples and guides. [ ][quay] [ ][hub] Prometheus, a Cloud Native Computing Foundation project, is a systems and service monitoring system. It collects metrics from configured targets at given intervals, evaluates rule expressions, displays the results, and can trigger alerts when specified conditions are observed. The features that distinguish Prometheus from other metrics and monitoring systems are: A multi dimensional data model (time series defined by metric name and set of key/value dimensions) PromQL, a powerful and flexible query language to…
read the full Prometheus overview →
About efcore
Repository This repository is home to the following .NET Foundation projects. These projects are maintained by Microsoft and licensed under the MIT License. Entity Framework Core Microsoft.Data.Sqlite Entity Framework Core EF Core is a modern object database mapper for .NET. It supports LINQ queries, change tracking, updates, and schema migrations. EF Core works with SQL Server, Azure SQL Database, SQLite, Azure Cosmos DB, MariaDB, MySQL, PostgreSQL, and other databases through a provider plugin API. Installation EF Core is available on NuGet. Install the provider package corresponding to your target database…
read the full efcore overview →
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Frequently asked questions
Is Prometheus or efcore more popular?
Prometheus has 66,906 GitHub stars and efcore has 14,814. Prometheus has the larger community by that measure.
Are Prometheus and efcore free?
Both are open source. Prometheus is licensed under Apache-2.0 and efcore under MIT. Neither carries a licence fee.
What is the difference between Prometheus and efcore?
Prometheus is written in Go and efcore in C#. The practical differences are community size, licence terms, language stack and release cadence — all compared in the table above.
Which should I choose, Prometheus or efcore?
Choose Prometheus if you want the larger community (66,906 stars) or its Apache-2.0 licence terms. Choose efcore if its feature set, stack or MIT licence fits better. Both are self-hostable.