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.

7 ideas

Software and apps
Shipping data model for options trading
Built an algorithm using maritime trade data to trade options on shipping firms, also selling subscriptions to friends.
Online
Hacker News, 2024
Software and apps
Game server and compute hosting
Began hosting game servers for friends, grew into renting servers including scientific computing to universities.
Over $10kHands-offOnline
Hacker News, 2022
Software and apps
Niche credit card processing business
Started a niche credit card processor that has made money for many years.
Online
Hacker News, 2022
Software and apps
Buy, renovate and sell a foreclosed condo
Bought a foreclosed condo, redid the kitchen and bathroom in spare time, and sold it for a profit later.
Over $10kHands-offIn person
Hacker News, 2019
Software and apps
Document review SaaS with monthly maintenance contract
Built a document management and review web app for a large company and gets a monthly maintenance fee, needing very little time each month.
Hands-offOnline
Hacker News, 2016
Software and apps
SSL certificate add-on for Heroku apps
Built an add-on that lets customers get SSL installed quickly. Reselling certificates required upfront cash.
Over $10kHands-offOnline
Hacker News, 2014
Software and apps
Web analytics and conversion tracking services
Runs subscription services for tracking website traffic and ad conversions, solo and mostly hands-off.
Hands-offOnline
Hacker News, 2014