Alternatives

Products that do what Weld – ETL, Reverse-ETL and SQL modelling all in one tool does

1. 1SS
   Singer – Simple, Composable Open Source ETL▲91

   2017 · singer.io

2. 2BL
   Bender – Let's Standardize Serverless ETL▲52

   2017 · engblog.nextdoor.com

3. 3DG
   Dbdot – Golang tool to help generate Postgres schema diagrams▲119

   2019 · github.com

4. 4DS
   DBML – simple DSL language to document database schemas▲57

   2019 · dbml-lang.org

5. 5KA
   Kiba, a lightweight Ruby ETL framework▲19

   2015 · kiba-etl.org

6. 6PL
   Pipelines – Language for scripting parrallel pipelines with Python▲69

   2019 · github.com

7. 7RA
   Rxdb – A fast, reactive, client-side database▲52

   2017 · github.com

8. 8RA
   Rambler – A simple and language-independent SQL schema migration tool▲69

   2016 · github.com

9. 9TA
   TakeShape, a Headless GraphQL CMS and SSG▲60

   2018 · takeshape.io

10. 10EB
    Eth.Build – Web3 prototyping and educational tool▲27

    2020 · eth.build

11. 11PA
    Prefect – A workflow engine designed for modern data engineering▲59

    2019 · github.com

12. 12GD
    Gleek diagram maker – UML class, Sequence, ER diagrams, Flowcharts▲56

    2021 · gleek.io

13. 13NP
    Neverbleed – privilege separation engine for OpenSSL and LibreSSL▲47

    2015 · github.com

14. 14RA
    rtoml – a TOML library for Python written in rust▲5

    2020 · github.com

15. 15RI
    repl.it — A client-side web REPL for 15+ languages▲27

    2011 · repl.it

16. 16OA
    oculus - a logging, web-based SQL client for teams (open source)▲30

    2012 · oculusapp.com

17. 17SA
    SAN – a Safe and Nice TOML/YAML Alternative▲45

    2018 · astrocorp.net

18. 18T1
    ToolJet 1.0 – Extensible open-source alternative to Retool▲20

    2022 · github.com

19. 19PA
    Preql – a database query language that compiles to SQL▲38

    2021 · github.com

20. 20MO
    Mostly ORMless – Ergonomic Postgres from TypeScript▲14

    2019 · github.com

21. 21SA
    Sondra – A Different ORM and REST Framework for Flask and RethinkDB▲21

    2015 · github.com

22. 22SA
    Sqlm a minimalist sql builder for Golang▲8

    2016 · github.com

23. 23XS
    Xsql – SQL schema conversion via an intermediate representation (Rust)▲5

    Dec 2025 · github.com

24. 24DA
    Diwata – a user-friendly database interface for PostgreSQL▲10

    2018 · github.com

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