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Knack alternatives · Spreadsheets

Open-source alternatives to Knack

Knack is not described as open source on its own site. 10 of the 42 other spreadsheet and database tools in this directory are open source, according to their own sites.

Knack is a paid product with a free trial, starting at $49 per month, billed annually ($59 billed monthly). All of them are free or have a free plan.

10 tools · Listings checked up to Nov 12, 2026 · Where the facts come from

How each one differs from Knack

  1. Baserow

    Open-source no-code database and application builder

    • Baserow starts at $10 per user / month, billed yearly. Knack starts at $49 per month, billed annually ($59 billed monthly).
    • Baserow has a free plan. Knack does not, though it has a free trial.
    • Baserow is open source and self-hostable, according to its own site.
    • Knack also covers forms.
    Baserow vs KnackBaserow pricing and details

  2. Teable

    AI spreadsheet-database with app builder and automations

    • Teable starts at $13 per seat / month, billed yearly ($24 billed monthly). Knack starts at $49 per month, billed annually ($59 billed monthly).
    • Teable has a free plan. Knack does not, though it has a free trial.
    • Teable is open source and self-hostable, according to its own site.
    • Knack also covers forms.
    Teable pricing and details

  3. Grist

    Open-source relational spreadsheet with Python formulas

    • Grist starts at $8 per user / month, billed annually. Knack starts at $49 per month, billed annually ($59 billed monthly).
    • Grist has a free plan. Knack does not, though it has a free trial.
    • Only Grist lists Windows, macOS and Linux apps.
    • Grist is open source and self-hostable, according to its own site.
    Grist pricing and details

  4. Rowy

    Spreadsheet-style UI and low-code backend for Firebase

    • Rowy starts at $12 per seat / month (Pro). Knack starts at $49 per month, billed annually ($59 billed monthly).
    • Rowy has a free plan. Knack does not, though it has a free trial.
    • Rowy is open source and self-hostable, according to its own site.
    • Rowy also covers spreadsheets.
    Rowy pricing and details

  5. Mathesar

    Open-source spreadsheet-like interface for Postgres

    • Mathesar is free. Knack starts at $49 per month, billed annually ($59 billed monthly).
    • Mathesar has a free plan. Knack does not, though it has a free trial.
    • Mathesar is open source and self-hostable, according to its own site.
    • Mathesar also covers spreadsheets.
    Mathesar pricing and details

  6. LibreOffice Calc

    Free, open-source spreadsheet for Windows, macOS and Linux

    • LibreOffice Calc is free. Knack starts at $49 per month, billed annually ($59 billed monthly).
    • LibreOffice Calc has a free plan. Knack does not, though it has a free trial.
    • Only LibreOffice Calc lists Windows, macOS and Linux apps.
    • Only Knack lists a web app.
    LibreOffice Calc pricing and details

  7. Gnumeric

    Free, open-source spreadsheet program

    • Gnumeric is free. Knack starts at $49 per month, billed annually ($59 billed monthly).
    • Gnumeric has a free plan. Knack does not, though it has a free trial.
    • Only Gnumeric lists a Linux app.
    • Only Knack lists a web app.
    Gnumeric pricing and details

  8. Univer

    Embeddable spreadsheet, document and slide SDK

    • Univer starts at $99 per month, or from $1,000 per year billed annually. Knack starts at $49 per month, billed annually ($59 billed monthly).
    • Univer has a free plan. Knack does not, though it has a free trial.
    • Univer is open source and self-hostable, according to its own site.
    • Univer also covers AI agents and spreadsheets.
    Univer pricing and details

  9. VisiData

    Terminal spreadsheet-style tool for exploring tabular data

    • VisiData is free. Knack starts at $49 per month, billed annually ($59 billed monthly).
    • VisiData has a free plan. Knack does not, though it has a free trial.
    • Only VisiData lists macOS and Linux apps.
    • Only Knack lists a web app.
    VisiData pricing and details

  10. Calligra Sheets

    Desktop spreadsheet from KDE's Calligra office suite

    • Calligra Sheets is free. Knack starts at $49 per month, billed annually ($59 billed monthly).
    • Calligra Sheets has a free plan. Knack does not, though it has a free trial.
    • Only Calligra Sheets lists a Linux app.
    • Only Knack lists a web app.
    Calligra Sheets pricing and details

Common questions

Is there an open-source alternative to Knack?

Yes. Baserow, Teable, Grist, Rowy, Mathesar, LibreOffice Calc, Gnumeric, Univer and 2 more are open source, according to their own sites.

Is Knack open source?

Knack is not described as open source on its own site. The listing was checked on Nov 12, 2026 against the pages it cites.

When was this checked?

Each listing shows its own date. On this page they run from Oct 5, 2026 to Nov 12, 2026. Vendors change prices and plans without notice, so confirm on their site before you buy.

This page is built from the listings. A tool is here because its listing says so, and the order is how close each is to Knack: the alternatives its listing names first, then the tools that share the most features with it.