Alternatives

Products that do what Gleek does

Free online diagramming tool for developers

1. 1GD
   Gleek diagram maker – UML class, Sequence, ER diagrams, Flowcharts▲56

   2021 · gleek.io

2. 2
   dbdiagram.io▲181

   Free database diagrams designer for analysts & developers 🛠

   2018

3. 3
   Stakpak.dev▲214

   Open-source DevOps agent to secure & manage production infra

   2025

4. 4
   Quick Diagram▲121

   A tool for generating diagrams and flowcharts from text.

   2020

5. 5
   Solarch▲109

   Interactive diagrams with AI, and your code always in sync

   Jun 2026

6. 6
   Diagrams for Mac▲196

   A diagram editor for visualizing structures and processes

   2020

7. 7
   OpenFlowKit▲129

   100% Free and Open Source Diagram Creator with Total Control

   Feb 2026

8. 8
   Flowkit▲296

   Sketch library for user flows/content maps/annotations

   2017

9. 9
   Mermaid Chart▲176

   A smarter way to create diagrams

   2023

10. 10
    Diagramiq▲78

    Create slick diagrams and collaborate with your team

    2018

11. 11
    Draw.io▲132

    Create and share diagrams easily

    2013

12. 12
    Sketch2scheme▲208

    Convert hand-drawn diagrams into digital schemes

    2024

13. 13
    Textografo▲120

    Create beautiful diagrams faster

    2016

14. 14PI
    Parabola.io – Automate your work with visual programming▲291

    Hi HN! I’m Alex from Parabola (https://parabola.io). Parabola is a visual programming tool for creating functional data flows that everyone can use. It’s entirely drag-and-drop, handles data sizes much larger than a traditional spreadsheet, calculates everything live, and can run your flows on a schedule of your choosing. I used to work in strategy consulting, doing data analytics for SMBs and Fortune 500 companies. The amount of time wasted on menial tasks was astounding. Things like cleaning data, generating custom reports, creating human workflows to solve shortcomings in third…

    2018 · parabola.io

15. 15
    DiaChat▲102

    Create and edit diagrams easily using natural language

    2022

16. 16
    tsk.lol▲116

    a customizable, open source, local-first, task manager

    Nov 2025

17. 17
    C1 Artifacts API▲225

    Build AI apps that can generate stunning slides and reports

    Nov 2025

18. 18
    Diagramr▲84

    Fastest way to find any diagram ✦ Google Images Sucks!

    2025

19. 19
    TypMo▲154

    Write wireframes. Generate prompts. Ship products.

    Dec 2025

20. 20
    ChartDB v2▲229

    Database diagrams editor for teams

    2025

21. 21
    Diagrams.net▲216

    Open source technology stack for building diagrams

    2021

22. 22
    VoxDeck▲197

    3D charts, motion cover​ & avatar generation for slides

    2025

23. 23
    Stenography▲192

    A smart codebase documenter combining AI & code parsing

    2021

24. 24
    Conektto API-First Design Studio▲157

    API design studio for product managers

    2023

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