All Side Hustle Ideas

Software and apps side hustle ideas

A web app, SaaS, mobile app, browser extension, bot or API that people pay for or that earns from ads.

Startup cost
Under $100$100 to $1k$1k to $10kOver $10k
Time
Hands-offA few hours a weekPart-timeNear full-time
Where
OnlineIn personOnline and in person
Earns from
AdsAffiliateSubscriptionsOne-time salesService feesRentMarketplace cutSponsors and donations
Coding
No coding neededNeeds coding

6 ideas

  • Software and apps
    Email marketing tool for creators
    Grew from blogging and a self-published book into building an email marketing tool for bloggers and creators.
    Online
    Hacker News, 2022
  • Software and apps
    Email newsletter tool for developers
    A newsletter platform built as a better alternative to a tool the owner used, with Markdown support and an API aimed at developers. Started as a side project.
    Online
    Hacker News, 2022
  • Software and apps
    No-code app builder born from clinic tools
    Began by writing Windows apps for a hospital department and grew it into a SaaS tool for building calculator apps.
    Online
    Hacker News, 2022
  • Software and apps
    Online solitaire game platform
    A solitaire site that began as a Mac app, found by looking for popular apps with poor reviews, and now supports the owner.
    Online
    Hacker News, 2022
  • Software and apps
    Simple tool for a niche industry
    Built a very basic tool for an industry the owner wanted to be part of, then found a larger opportunity there that now supports them full-time.
    Online
    Hacker News, 2022
  • Software and apps
    Automated dependency update service for developers
    Built a service that keeps software dependencies up to date and supports multiple programming languages. It started as a passive project and became a full-time company.
    Online
    Hacker News, 2018