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slang.fyi

side project

/saɪd ˈprɒdʒɛkt/

Very Common

A personal project someone builds outside their main job, usually for learning, fun, or income potential.

In tech culture, side project implies a built thing, not just a skill. It can be a business seed or just something you made because you wanted to. The term doesn't carry the hustle-culture weight of 'side hustle'.

Real-world examples4 examples
#ExampleWhat it meansSource
01Been working on a side project for three months. Finally shipped it last night.Completed and released something built outside of regular work.x, 2024
02My side project makes more than my day job now and I don't know how to feel.A personal project unexpectedly outgrew the main source of income.x, 2023
03I start a new side project every time I'm bored at work. I have 40 half-finished things on GitHub.Side projects are used as an escape valve for boredom, often abandoned quickly.reddit, 2024
04Interviewer asked me about my side projects and I spent 20 minutes talking. I think I got the job.Personal projects became a talking point that demonstrated genuine interest and initiative.reddit, 2024

Use it when

  • Someone builds a product, app, or tool outside their main job.
  • Someone is experimenting with a new skill or idea in their own time.
  • Someone has a small product that might someday become a business.

Do not use it when

  • The project is an official work assignment.
  • The primary goal is income rather than building or learning.Use “side hustle” instead.

Side project vs passion project

side project

Side project is neutral on motivation. It can be for learning, money, or fun.

VS

passion-project

Passion project emphasizes deep personal investment and intrinsic motivation over outcomes.

Origin and context

Common in software and startup culture since the early 2000s. Popularized by communities like Hacker News, Indie Hackers, and Product Hunt where builders share and celebrate personal projects. The term gained cultural weight as successful products like Craigslist, Slack, and Gmail started as side projects.

First seen
2000s
Confidence
medium

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Use this stable URL to reference the entry.

https://slang.fyi/side-project
Updated: 2026-08-28License: CC BY 4.0

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