Commerce · alternatives · 2026

24 alternatives to Spark - 37Signals Campfire client now available in Windows Store

Spark is a Windows application that functions as a client for 37Signals Campfire, a team communication platform. It allows Windows users to access Campfire's messaging and collaboration features directly from their… Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. Spark - 37Signals Campfire client now available in Windows Store launched in 2013; newer entries below may have overtaken it.

1. 1
   Spark for Mac▲1,058

   Beautiful and intelligent email app

   2016 · sparkmailapp.com · its alternatives →

2. 2
   All-new Spark▲345

   Smart. Focused. Email

   2022 · sparkmailapp.com · its alternatives →

3. 3
   Spark for Android▲293

   The much beloved email client now on Android

   2019 · play.google.com · its alternatives →

4. 4
   Spark▲364

   A smart, fast and free email client for iPhone

   2015 · sparkmailapp.com · its alternatives →

5. 5
   Campfire▲342

   AI agent that automates your Google Ads

   2022 · sprites.ai · its alternatives →

6. 6
   Spark 2.5▲340

   Love your email again

   2019 · sparkmailapp.com · its alternatives →

7. 7
   GitHub Spark AI▲193

   Create and manage full-stack micro-apps with AI prompts

   2024 · githubnext.com · its alternatives →

8. 8
   Spark 2.0▲211

   Revolutionary email for teams

   2018 · sparkmailapp.com · its alternatives →

9. 9
   LLM Spark▲365

   Dev platform for building production ready LLM apps

   2023 · yourgpt.ai · its alternatives →

10. 10
    Campsite▲818

    Your team's posts, calls, docs, and chat in one app

    2024 · campsite.com · its alternatives →

11. 11
    Spark.NET▲91

    The .NET web framework for makers

    2023 · its alternatives →

12. 12
    Blaze▲419

    The next gen community growth tool

    2022 · its alternatives →

13. 13
    Bottlefire – Build single-executable microVMs from Docker images▲161

    2025 · bottlefire.dev · its alternatives →

14. 14
    Mimestream, a native macOS email client for Gmail▲403

    A native macOS email client for Gmail

    2020 · mimestream.com · its alternatives →

15. 15
    Campfire▲79

    A revolutionary story planning software for writers.

    2018 · campfirewriting.com · its alternatives →

16. 16CF
    Camp Fire – chat with people within a radius▲151

    2020 · campfire.rest · its alternatives →

17. 17
    SparkScore▲362

    The true influence of any Twitter account

    2018 · sparktoro.com · its alternatives →

18. 18
    GPT‑5.3‑Codex‑Spark▲277

    An ultra-fast model for real-time coding in Codex

    Feb 2026 · openai.com · its alternatives →

19. 19
    GitHub Spark▲249

    AI platform for building + deploying full-stack apps

    2025 · github.com · its alternatives →

20. 20
    Sendspark▲140

    Send a video, spark a conversation

    2019 · sendspark.com · its alternatives →

21. 21
    Spark by Readdle▲157

    Fast, smart and beautiful email client for iOS

    2016 · sparkmailapp.com · its alternatives →

22. 22
    Mimestream 1.0▲175

    A native macOS email client for Gmail

    2023 · mimestream.com · its alternatives →

23. 23
    Spark▲196

    Community for indie hackers to learn, network & grow

    2023 · discord.com · its alternatives →

24. 24
    Campfire▲88

    A powerful writing software for novelists.

    2022 · campfirewriting.com · its alternatives →

Ranked by how close each launch is in meaning, then by votes. Prices were read from each product’s own site when checked and can change. Refine with your own description →