Dev tools · alternatives · 2026

24 alternatives to Open-source and paid apps to Build a SaaS product in 2021

Search and discover your favorite building blocks to extend your SaaS application

Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. Open-source and paid apps to Build a SaaS product in 2021 launched in 2021; newer entries below may have overtaken it.

1
SaaS Blocks 2.0▲188
300+ open-source and paid tools to build a SaaS application
2022 · saasblocks.io · its alternatives →
2
SaaS Blocks by Apideck▲225
+120 tools to build and augment your SaaS application
2019 · saasblocks.io · its alternatives →
3
Opensource Builders▲491
Hey everyone, A couple years ago, I got into programming and fell down the rabbit hole of open-source software. I started realizing a lot of the commercial software I used had open-source alternatives. In 2020, those alternatives were good but not perfect replacements. With LLMs entering the scene, there are even more open-source alternatives now and they're narrowing the gap between proprietary options. LLMs also got me thinking: will people continue using proprietary or opensource applications in the future when they can build their own personal application tailored specifically for their…
2020 · opensource.builders · its alternatives →
4
SaaS Boilerplate▲221
Launch a SaaS business faster with this boilerplate app
2018 · github.com · its alternatives →
5
Best SaaS Growth Case Studies▲216
Amazing SaaS growth case studies to be inspired by
2020 · its alternatives →
6
SaaS Product Benchmarks▲157
See how your tech product stacks up w/ metrics that matter
2020 · productbenchmarks.com · its alternatives →
7
SaaS Product Stack for Startups▲355
Find SaaS products to help grow your startup or side project
2022 · zorp.one · its alternatives →
8
SaaS Product Stack▲264
200+ tools to build your next MVP in ClickUp
2022 · vatsal1811.gumroad.com · its alternatives →
9
Look at that SaaS▲266
Inspiration and resources for SaaS founders
2017 · emailoctopus.com · its alternatives →
10
Product Launch Videos 2.0▲202
Huge library of product launch video examples
2023 · flowjam.com · its alternatives →
11
The SaaS Guide to Search Engine Optimization▲194
A free guide to doing SEO for your SaaS company
2018 · getcredo.com · its alternatives →
12
Resmo SaaS Discovery▲176
Discover and secure SaaS apps used in your company
2023 · resmo.com · its alternatives →
13
GoCodeo SaaS Builder▲162
An open-source AI agent that builds full-stack SaaS apps
2025 · github.com · its alternatives →
14
SaaSMe▲102
Discover SaaS trends before they take off
2023 · saasme.xyz · its alternatives →
15
SaaS Bundle for 2020▲36
The best solutions to power up your business
2019 · its alternatives →
16
The SaaS Starter Stack▲53
A list of free and affordable tools for building a SaaS.
2024 · saasstarterstack.com · its alternatives →
17
1UpRemix▲77
Save hours of work with a SaaS starter for Remix
2022 · its alternatives →
18
My SaaS Ideas▲5
100+ profitable saas ideas for your next product in 2025
2024 · my-saas-ideas.com · its alternatives →
19
Find Your SaaS▲9
Marketplace to discover and list your SaaS products
2025 · findyoursaas.com · its alternatives →
20
The Startup Chat 138: Building Products in Hyper-Competitive Markets▲57
Hiten Shah & Steli Efti on growing SaaS startups in 2017
2016 · thestartupchat.com · its alternatives →
21
Seed▲70
Find already validated SaaS ideas, no investment required
2023 · its alternatives →
22
100 APIs for SaaS Cookbook▲10
Top APIs to Build Great SaaS Product
2019 · jedng.gumroad.com · its alternatives →
23
MarketMint▲23
Discover and Launch Things Beyond Just Tools & Startups
2025 · its alternatives →
24
shadcn/pro▲22
Building your SaaS just got unfairly easy
2024 · pro.shadcn.co · its alternatives →

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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 →