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.
44 ideas
- Software and appsThe operator runs a few near-identical sites that each sell access to a niche database, such as investors, angels or journalists. The revenue model is not stated in the source and is likely paid access.OnlineStarter Story, 2026
- Software and appsAfter leaving an agency, the operator built a directory-related software tool that earns recurring revenue and is adding a lead-gen angle.OnlineNiche Pursuits Podcast, 2026
- Software and appsBuilds browser extensions that fix common site annoyances. Revenue comes from them, helped by search-friendly names and store reviews.Under $100Hands-offOnlineHacker News, 2024
- Software and appsA checklist app built for the owner's own routines that now earns recurring income.Hands-offOnlineHacker News, 2024
- Software and appsA browser extension that automatically claims daily login bonuses at online casinos for a monthly subscription.OnlineHacker News, 2024
- Software and appsA random number service sold through a website and a cloud marketplace listing, left running with little attention.Hands-offOnlineHacker News, 2024
- Software and appsBuilt an algorithm using maritime trade data to trade options on shipping firms, also selling subscriptions to friends.OnlineHacker News, 2024
- Software and appsA web app that pulls transaction data out of PDF bank statements, built after the owner needed it for personal spending analysis.OnlineHacker News, 2022
- Software and appsWrote embedded software and earned a royalty on every device shipped for many years.Hands-offOnlineHacker News, 2022
- Software and appsSoftware that ties game stats to video footage for coaches, sold to schools in many states.Hands-offOnlineHacker News, 2022
- Software and appsBuilt a small tool that emails a weekly digest of newly saved Twitter bookmarks, with paid subscribers.Hands-offOnlineHacker News, 2022
- Software and appsBuilt a web tool for stock technical analysis and offered it white-labeled to companies with distribution, splitting profits with them.Hands-offOnlineHacker News, 2019
- Software and appsBuilt a service with an API that lets businesses send cookies to customers and partners across Europe and the US.OnlineHacker News, 2019
- Software and appsAn open source API that generates embeddable chart images and QR codes. Monetized as a hosted service.Hands-offOnlineHacker News, 2019
- Software and appsRuns a subscription service that lets sites display announcement banners.Hands-offOnlineHacker News, 2019
- Software and appsA web tool that lets esports teams create mascot style gaming logos, currently in private beta.OnlineHacker News, 2019
- Software and appsAn outgoing text message API with flat pricing, small packages for hobbyists, and a free daily message. Has an open source version.Hands-offOnlineHacker News, 2019
- Software and appsA team calendar software product that earns recurring revenue and could grow with more marketing.$1k to $10kOnlineHacker News, 2019
- Software and appsSells a web service that randomly sends text reminders for kids to call their parents or for adults to call theirs.Hands-offOnlineHacker News, 2019
- Software and appsBuilt a stock trading model for personal use, then published it on a platform where subscribers pay to follow it. Subscribers take responsibility for any trades.Hands-offOnlineHacker News, 2018
- Software and appsBuilt a documentation product that earned its first revenue with little maintenance, and is planning a second version.Hands-offOnlineHacker News, 2018
- Software and appsA competitor monitoring product that began as a side project and grew into a systemised business with a team, so the owner now acts more like an investor.Hands-offOnlineHacker News, 2016
- Software and appsBuilt a simple CMS and CRM for a freelance client and set up automated billing per user. Income grows as the client's user base grows.Hands-offOnlineHacker News, 2016
- Software and appsA subscription tool that watches DNS zones for changes and alerts the owner, keeping a revision history. Aimed at people who manage DNS for clients.OnlineHacker News, 2016
- Software and appsBuilt a document management and review web app for a large company and gets a monthly maintenance fee, needing very little time each month.Hands-offOnlineHacker News, 2016
- Software and appsBuilt a tool that takes a keyword, translates it into many languages and shows available .com domains. It has earned some revenue from users.Hands-offOnlineHacker News, 2016
- Software and appsSoftware for protecting source code with encryption, built to meet the owner's own need when existing products were very expensive. It has produced steady income for years with a small remote team.OnlineHacker News, 2016
- Software and appsLets a couple of people use a personal instance of an open source program they run, so they do not have to host it themselves, in exchange for a small monthly fee.Hands-offOnlineHacker News, 2016
- Software and appsBuilt an online exam preparation platform for aspiring medical students together with a sibling. Once launched it needed very little upkeep and sold access to students.Hands-offOnlineHacker News, 2016
- Software and appsBuilt a service that delivers updates for private WordPress plugins and themes, which developers otherwise find painful to manage. Customers pay for the service.Hands-offOnlineHacker News, 2016
- Software and appsA service that generates website thumbnails automatically. The owner bought it from another person, kept developing it, and earns from its customers.OnlineHacker News, 2016
- Software and appsRuns a website that helps people practice music notation. It has earned steadily for years.Hands-offOnlineHacker News, 2016
- Software and appsBuilt a mobile app that tracks commuter rail trains in real time. Downloads spike whenever the transit system has service problems.OnlineHacker News, 2016
- Software and appsA paid RSS reader that is open source and runs on a managed cloud platform. Users pay a subscription handled through a payment processor, and it needs almost no ongoing effort.Hands-offOnlineHacker News, 2016
- Software and appsA web app for sending and reading anonymous messages, with paid accounts adding extra features.Hands-offOnlineHacker News, 2014
- Software and appsBuilt a business software product that still brings in monthly revenue with little attention.Hands-offOnlineHacker News, 2014
- Software and appsBuilt an iPhone photo reminder app that Apple featured, earning without marketing spend.Hands-offOnlineHacker News, 2014
- Software and appsA service letting users email files into cloud storage accounts, with premium paid accounts popular with realtors and lawyers.Hands-offOnlineHacker News, 2014
- Software and appsBuilt a small ERP system sold to businesses on monthly fees.OnlineHacker News, 2014
- Software and appsBuilt an add-on that lets customers get SSL installed quickly. Reselling certificates required upfront cash.Over $10kHands-offOnlineHacker News, 2014
- Software and appsRuns subscription services for tracking website traffic and ad conversions, solo and mostly hands-off.Hands-offOnlineHacker News, 2014
- Software and appsA subscription analytics product largely automated in onboarding and billing, with an affiliate program and agency customers that expand usage.OnlineHacker News, 2014
- Software and appsBuilt an anti-piracy licensing system for their own Android apps and then sold it to other developers as a subscription service.Hands-offOnlineHacker News, 2011
- Software and appsSold software that lets people build their own social network, later releasing the code for free.OnlineHacker News, 2011