How to contribute to open source projects

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How to contribute to open source projects

Postby tbreina » Wed Mar 14, 2012 4:44 pm

Robert Wall found this very nice article by Andy Lester on ways you can contribute to open-source projects. I thought I should pass it along. Remember, everyone starts as a newbie and no one expects Mozart.

14 Ways to Contribute to Open Source without Being a Programming Genius or a Rock Star

Plenty of people want to get involved in open source, but don’t know where to start. Here are several ways to help out even if you lack confidence in your technical chops.

by Andy Lester| March 11, 2012
Source url: ... rock-star/ grabbed on 14 MAR 2012

Open source software has changed computing and the world, and many of you would love to contribute. Unfortunately, many people are daunted by what they imagine is a high barrier to entry into a project. I commonly hear people say that they’d love to contribute but can’t because of three reasons:

  • “I’m not a very good programmer.”
  • “I don’t have much time to put into it.”
  • “I don’t know what project to work on.”

There are three core principles to remember as you look for opportunities to contribute:

  • Projects need contributions from everyone of all skills and levels of expertise.
  • The smallest of contributions is still more than none.
  • The best project to start working on is one that you use already.

The most damaging idea that I’ve observed among open source newbies is that to contribute to open source, you have to be some sort of genius programmer. This is not true. Certainly, there are those in the open source world who are seen as rock stars, and they may certainly be genius programmers. However, the vast majority of us are not. We’re just people who get stuff done. Sometimes we do a little, and sometimes we do a lot. Sometimes it’s programming, and sometimes it’s not.

Most of what makes open source work is actual work, time spent making things happen for the project. Most of these things don’t require the brains or vision of a Larry Wall, creator of Perl, or a David Heinemeier Hansson, creator of Rails. Designing a new language or a web framework may take inspiration, but the rest of what makes projects like Perl and Rails successful is perspiration. This work may not get all the glory, but it’s still necessary, and after a while, your contributions will get noticed.

Start listening
Everything in open source involves other people. You’re looking to join a team, and that means understanding the community and how it works. Walking in to a project and saying “Hi, here’s what I think this project should be doing” is usually not taken as a good thing. Some projects may welcome that sort of approach, but if the project has been running a while, the chances of that attitude being embraced are small. Listening is the best way to know what the project needs.

Join a mailing list: For many projects, the mailing list is the main conduit of communication about the development of the project. On large projects, there are many mailing lists to choose from. For example, the PostgreSQL project has no fewer than 12 user-oriented lists and six developer lists on its mailing list page. I suggest you follow the main user-oriented list and the core developer list in which to start listening.

Follow a blog: Blogs maintained by core developers often give information about what’s coming up in future releases, and what it’s taken to get there. A planet site aggregates news and blog entries from many sources related to the project. If there is a planet site, like or, start there. Just search Google for “planet <projectname>.”

Join an IRC channel: Many open source projects have dedicated Internet relay chat (IRC) channels where developers and users hang out to discuss problems and development. Check the project’s website for the details of what the channel is called and what IRC network it’s found on.

Work with tickets
Code is the heart of any open source project, but don’t think that writing code is the only way to contribute. Maintenance of code and the systems surrounding the code often are neglected in the rush to create new features and to fix bugs. Look to these areas as an easy way to get your foot into a project.
Most projects have a publicly visible trouble ticket system, linked from the front page of the project’s website and included in the documentation. It’s the primary conduit of communication between the users and the developers. Keeping it current is a great way to help the project. You may need to get special permissions in the ticketing system, which most project leaders will be glad to give you when you say you want to help clean up the tickets.

Diagnose a bug: Bugs are often poorly reported. Diagnosing and triaging a bug can help save the developers save time with the legwork of figuring out the specifics of the problem. If a user reported, “The software doesn’t work when I do X,” spend some time to figure out the specifics of what goes into that problem. Is it repeatable? Can you create a set of steps to cause the problem repeatedly? Can you narrow down the problem, such as only happening on one browser but not another, or one distro but not another?
Even if you don’t know what causes the problem, the effort you put into narrowing down the circumstances makes it easier for someone else to fix it. Whatever you discover, add it to the ticket in the bug system for all to see.

Close fixed bugs: Often bugs are fixed in the codebase but tickets reported about them don’t get updated in the ticketing system. Cleaning up this cruft can be time-consuming, but it’s valuable to the whole project.

Start by querying the ticket system for tickets older than a year and see if the bug still exists. Check the project’s release change log to see if the bug was fixed and can be closed. If it’s known to be fixed, note the version number in the ticket and close it.
Try to recreate the bug with the latest version of the software. If it can’t be recreated with the latest version, note that in the ticket and close it. If it still exists, note that in the ticket as well and leave it open.

Working with code
Programmers of all experience levels can help with the code in the project. Don’t think that you have to be a coding genius to make real contributions to your favorite project.
If your work involves modification to the code, investigate the method that the project uses for getting code from contributors. Each project has its own workflow, so ask about how to do it before you set out to submit code.

For example, the PostgreSQL project is very rigorous in its process: Code modifications are sent in patch form to a mailing list where core developers scrutinize every aspect of the change. On the other end is a project like Parrot where it’s easy to get commit privileges to the codebase. If the project uses GitHub, there may be a workflow that uses the pull request feature of GitHub. No two projects are the same.
Whenever you modify code, make sure that you act as a responsible member of the community and keep your code style to match the rest of the codebase. The code you add or modify should look like the rest. You might not like the bracing style or the handling of spaces for indentation, but it’s rude to submit a code change that doesn’t match the existing standards. It’s the same as saying “I don’t like your style, and I think mine is better, so you should do it my way.”

Test a beta or release candidate: Any project that’s designed to run on multiple platforms can have all sorts of portability problems. When a release approaches and a beta or release candidate is published, the project leader hopes that it will be tested by many different people on many different platforms. You can be one of those people and help ensure that the package works on your platform.
Typically you only need to download, build, and test the software, but the value to the project can be huge if you’re on an uncommon distribution or hardware. Just reporting back that the build and test works helps the project leaders know that the impending release is solid.

Fix a bug: This is usually where contributors wanting to get working on code start. It’s simple: Find an interesting-sounding bug in the ticket system and try to fix it in the code. Document the fix in the code if it’s appropriate.

It’s a good idea to add a test to the test suite to test the spot of code you fixed; some projects require bug fixes to include tests. Keep notes as you poke around this unfamiliar codebase. Even if you aren’t able to fix the bug, document in the ticket what you discovered as part of the fix attempt. What you find helps those who come after you.
Write a test: Most projects have a test suite that tests the code, but it’s hard to imagine a test suite that couldn’t have more tests added to it. Use a test coverage tool like gcov for C, or Devel::Cover for Perl to identify areas in the source code that aren’t tested by the test suite. Then, add a test to the suite to cover it.

Silence a compiler warning: The build process for many C-based projects often spew the odd compiler warning flag to the screen. These warnings are usually not indicators of a problem, but they can look like it. Having too many warnings can make the compiler sound like it’s crying wolf.
Check to see if the code could actually be hiding a bug. If not, modifying the source to silence helps to hide these false positives.

Add a comment: When you’re digging through the code, you may find some spots that are confusing. Chances are if you were confused, others will be as well. Document them in the code and submit a patch.

Work with documentation
Documentation is typically the part of a project that gets short shrift. It also can suffer from having been written from the point of view of those who are familiar with the project, rather than through the eyes of someone just getting into it. If you’ve ever read docs for a project where you think, “It’s as though this manual expects that I already know how to use the package,” you know what I’m talking about. Often a set of fresh eyes can point out deficiencies in the documentation that those close to the project don’t notice.

Create an example: There is no project that has too many how-to examples. Whether it’s a web API, a library of routines, a GUI app like Gimp or a command line tool, a good example of proper usage can more clearly and quickly explain proper usage of software than pages of documentation.

For an API or library, create an example program that uses the tool. This could even be extracted from code you’ve written, trimmed down to the bare necessities. For a tool, show real-world examples of how you’ve used it in your daily life. If you’re visually oriented, consider creating a screen-capture of an important process, such as how to install the application.
Work in the community

Open source is only partly about code. Community makes open source work. Here are ways you can help build it up.

Answer a question: The best way to help build the community is by helping others. Answering a question, especially from someone who is just getting his feet wet, is crucial to helping the project grow and thrive. The time you take to help a n00b, even if he’s asking a question where you could easily throw back a quick “RTFM,” pays off down the road in getting another active member of the community. Everyone starts out somewhere, and projects need a constant inflow of people if they’re to stay vital.

Write a blog post: If you’ve got a blog, write about your experiences with the project that you’re using. Tell about a problem you faced using the software and what you did to solve it. You’ll be helping in two ways, both by helping keep the project on the minds of others around you, and by creating a record for anyone else who has your problem in the future and searches the web for the answer. (A blog of your technical adventures is also an excellent way to show real-world experience with the software in question next time you go hunting for a job using it.)
Improve a website: Most programmers are pretty crappy graphic designers, and it’s a rare project website that couldn’t use some help in the design department. If you’ve got skills in web design and can help improve the website, and thus the public-facing image of the project, that’s time well spent. Perhaps the project could use a graphic overhaul, or a logo to identify the project. These may be skills lacking in the community. I know I’d love it if I could get some graphic design help on my projects’ websites.

Most of all, listen to what people around you discuss. See if you can recognize a pressing need. For instance, recently on the Parrot developers’ mailing list, it was decided to use GitHub as the trouble ticket system, abandoning the old Trac installation they had. Some people were against the move because there was no way to convert the tickets to GitHub’s system. After a day of back and forth arguing, I piped up and said “How about if I write a converter?” People were thrilled at the idea. I spent the time to write a conversion program for the 450+ tickets, so we lost none of our ticket history. It was a great success. I got to pitch in, and the core developers stayed focused on the business of working on Parrot.
There are so many ways to contribute to open source if we look past the obvious steps of writing a new product feature. Everyone who uses open source can bring their skills to the community and help keep open source a vital part of computing.
Everybody's got something to hide except for me and my monkey.

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