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Backlog is an online project management software that provides a simple yet powerful interface that can be quickly adopted by anyone. Backlog allows you to with developers, clients, designers, and other teams, connected on one platform. 

nTask is a task management platform smart teams rely on to get things done better and faster. With nTask you can visualize project plans and manage resources in a better way through beautiful Gantt charts. Or make tasks dependant on each other through relationships and set and achieve project milestones by organizing tasks in the form of most significant events. nTask also provide tools so that you can effectively bill your project by hourly rate. This can be done for an entire project, individual tasks, or resources.

Codegiant is a cloud-based software platform that provides fully integrated workflow for developers. The platform provides tools for project management of software development projects, including issue tracking, hosted Git repositories, continuous integration and documentation. By providing a unified, secure platform companies can focus on building software rather than setting up tooling and infrastructure. Allowing companies and their teams to work closer and better together and shipping projects to production faster. Codegiant is free for small teams up to 5 people, after that a monthly subscription per user is required to use Codegiant in your projects.

A web-based tool for DevOps lifecycle management and source code hosing. GitLab, much like GitHub use the open-source technology Git for repository management and code reversion. On top of that GitLab provide extra services like issue-tracking, wiki and CI/CD pipelines for code deployment. The main difference between GitLab and GitHub is that GitLab is open-source and the whole platform can be self-hosted on your own server. GitLab also provides the same hosted repository solutions provided by GitHub.

With Bitbucket developers and teams can collaborate better on software projects. BitBucket is a web-based version control repository hosting service owned by Atlassian. The software is a suite of tools built on-top of the free and open-source Git repoitory management and version control system. Bitbucket provides features that developers can use to build, test and deploy code with integrated CI/CD.

GitHub is a platform that provides hosting for software development version control for open source and closed source projects. The platform utilize the revision control system Git, and build services around this open-source technology. With GitHub developers and teams can collaborate on software projects and build, host, and promote source code of their own open-source projects. GitHub itself is closed-source and was acquired by Microsoft in 2018 for US$7.5 billion.