Git vs GitHub: the difference, in plain language
Short answer: Git is a program on your computer that records the history of your files. GitHub is a website that stores copies of Git repositories so people can share them and work together. You can use Git with no GitHub account; you cannot use GitHub without Git.
The confusion is understandable — most people meet both on the same afternoon and the names are nearly identical. But keeping them apart is the difference between typing commands you half understand and actually knowing what happens when a merge goes wrong.
The distinction, once and for all
Git is a version control system, created in 2005 to manage the Linux kernel. It runs locally. It records snapshots of your project, lets you branch and merge, and lets you go back to any previous state. Disconnect from the internet and everything still works, because your machine holds the entire history.
GitHub is a commercial website (owned by Microsoft) that hosts Git repositories and adds the collaboration layer Git deliberately does not have: pull requests, issues, code review, permissions, automation, releases, a social profile. GitLab and Bitbucket do the same job; GitHub is simply the largest.
An analogy that holds up: Git is the word processor, GitHub is the shared drive plus the review workflow. Alternatives exist for the drive. The word processor is the skill.
| Git | GitHub | |
|---|---|---|
| What it is | Software you install | A website and service |
| Runs | On your machine | On someone else's servers |
| Needs internet | No | Yes |
| Created by | Linus Torvalds, 2005 | GitHub Inc., 2008 (Microsoft since 2018) |
| Replaceable | Not really — it is the standard | Yes: GitLab, Bitbucket, Gitea, self-hosted |
| What it gives you | History, branches, merges | Sharing, review, issues, CI, visibility |
What Git actually does, conceptually
Three ideas explain almost every command.
A commit is a snapshot, not a difference. Git stores the complete state of your project at that moment, addressed by a hash. Diffs are computed for display, but the underlying model is a chain of snapshots — which is why moving between commits is instant and why history is hard to corrupt.
A branch is a movable pointer. Not a copy of your files: a label pointing at a commit, which moves forward as you commit. This is why creating a branch costs nothing and why "make a branch for everything" is standard advice rather than an extravagance.
Three places, not one. Your working directory (files as they are), the staging area (what will go into the next commit), and the repository (committed history). git add moves changes from the first to the second, git commit from the second to the third. Understanding this removes most beginner confusion in one go.
The commands that carry the work
Ten cover the overwhelming majority of daily use:
git clone— copy a remote repository locallygit status— what has changed, and what is stagedgit add— stage changes for the next commitgit commit -m— record the snapshotgit push— send your commits to the remotegit pull— fetch and merge the remote's commitsgit branchandgit switch— create and move between branchesgit merge— bring another branch's work into yoursgit log --oneline --graph— read the history as a shapegit diff— see the actual changes
And three for when things go wrong, which is the real test of whether you know Git:
git restore— discard changes in a file, before staginggit revert— create a new commit that undoes an old one, safely, on shared branchesgit reset— move the branch pointer, which rewrites history and is therefore dangerous on anything you have pushed
The rule that saves careers: on a shared branch, undo with revert, never with reset followed by a force push. Rewriting history that other people have already pulled is how a Tuesday afternoon disappears.
Merge or rebase?
The most-argued question in Git, with a simple practical answer.
Merge joins two branches and records that it happened, creating a merge commit. History shows what actually occurred, including the parallel work. It is safe and it never rewrites anything.
Rebase replays your commits on top of another branch, producing a straight line as though you had started from the latest state. History is easier to read, but the commits are new objects — the old ones are replaced.
The convention most teams settle on: rebase your own local branch to keep it current, merge it into main. And never rebase a branch someone else is working on. If in doubt, merge: a slightly messy history has never caused an outage.
Do you need GitHub?
For learning Git, no. Everything above works with no account and no network.
For working as a developer, effectively yes — though it may be GitLab or Bitbucket instead. Three things make the hosting layer indispensable:
Pull requests. The unit of collaboration in modern software: a proposed change, reviewed, discussed and approved before it lands. This is a hosting-platform invention, not a Git feature.
Automation. Push a commit and a machine runs the tests, builds the artefact and deploys it. GitHub Actions is where most people meet CI/CD for the first time.
Visibility. Your profile is a portfolio that recruiters read. Not the contribution graph — the repositories, and specifically their README files. A small project explained clearly outweighs a large one with no explanation.
The mistakes beginners make
Committing secrets. An API key in a commit is in the history forever, even if you delete the file in the next commit. Remove the key, rotate it, and add a .gitignore before the first commit rather than after.
Enormous commits. "Work in progress" containing forty files cannot be reviewed, reverted or understood later. One commit, one intention.
Never branching. Everything on main means every experiment is a risk to working code.
Fearing the terminal. Graphical clients are fine, and every one of them hides the model you need when it breaks. Learn the ten commands; use whatever interface you like afterwards.
Pull without understanding. git pull is a fetch plus a merge. Knowing that is what turns an unexpected merge commit from a mystery into a fact.
How long does Git take to learn?
A week to be productive, and it is one of the highest-return weeks in a technical career, because everything downstream depends on it: pull request workflows, infrastructure as code, GitOps, and every pipeline you will ever build.
Our Git and GitHub course is free with an account and covers exactly this ground — the object model, branching and merging, pull requests, resolving conflicts, and GitHub Actions — with labs, quizzes and a verifiable certificate. It is the first step on the DevOps roadmap for a reason.
Frequently asked questions
- What is the difference between Git and GitHub?
- Git is version control software that runs on your computer and records the history of your project. GitHub is a website that hosts Git repositories and adds collaboration features such as pull requests, issues, code review and automation. Git works offline and without GitHub; GitHub is useless without Git.
- Can I use Git without GitHub?
- Yes, completely. Git is fully functional on a single machine with no account and no network — commits, branches, merges and history all work locally. You only need a hosting service when you want to share the repository, back it up remotely, or collaborate through pull requests.
- Is GitHub free?
- Yes for individuals, including unlimited public and private repositories and a monthly allowance of automation minutes. Paid plans add organisation features, more automation minutes and advanced security tooling. Learning and hosting a portfolio costs nothing.
- Should I use merge or rebase?
- Rebase your own local branch onto the latest main to keep it current, then merge it into main. Never rebase a branch that other people have already pulled, because it replaces commits they have. When unsure, merge — a slightly messy history is harmless, rewritten shared history is not.
- How do I undo a commit in Git?
- On a shared branch use git revert, which creates a new commit undoing the old one and leaves history intact. On a local branch you have not pushed, git reset can move the pointer back. Reset plus force push on a shared branch is the fastest way to lose other people’s work. The free Git course covers recovery in depth.
- How long does it take to learn Git?
- About a week to be productive with the ten commands used daily, and a few months of real use before conflicts and history rewriting stop being intimidating. It is the highest-return week in a technical career because every later tool assumes it.
Where to go next
Git and GitHub is free with an account — start there, then add containers and pipelines. If you want the whole sequence, the DevOps roadmap puts Git in week one and explains what each following step depends on.