What are the current popular source program version management software and project management software, and what are the pros and cons?

Openproj
Openproj is a free and open source application that works perfectly on UNIX, Linux, Windows or Mac systems. It's a replacement for all Microsoft Project desktop applications, and you can even open a local project file. The scheme has features such as cost accounting, network diagrams (PERT charts), Gantt charts, RBS, and WBS charts.

Ganttproject
This is an easy-to-use, free management tool for project scheduling and management based on Gantt charts. Key features include task assignment, class classification, Gantt diagram

Okit

First, improve efficiency
L OKIT the task as a Tetris in front of the user, the user will get pleasure from eliminating a line;
L at the same time each task will be checked and confirmed, it is easy for the people to develop all things seriously treated, finish habits;
The Okit task mechanism also allows the task manager to refine the task, providing a means for large-granularity authorization, while increasing the motivation of the team members while improving the ability.
Okit can improve project productivity while improving team execution.
L Okit in the event that only once, the project team members can see;
L Okit in the need to change as long as the input, the relevant users can be notified;
L Okit in the task as long as the scheduling, the project leader, task holders, department heads can be traced;
L Okit in the knowledge of the information can only be submitted once, the Subscribers are able to receive;
Okit reduces communication workload and improves communication efficiency through data reuse and sharing.
Second, let the work orderly
L Okit Support Management of any number of projects, each project independent team, independent authority, independent space, independent management, data centralized storage;
L Okit provides independent functional management planning tasks, defect and improvement recommendations, requirements and designs, test cases, documentation and code, reports, event records, and more.
Okit through the project isolation and classification of information for various types of management, so that project information to position, so that the project team is no longer affected by the mail storm;
L Okit provides new-release-Report Progress-submit-Accept close task flow;
L Okit provides new defects-open-assign-dispose-test-confirm-close the defect processing process;
L OKIT provides checkout code-change-sync-merge-submit code management process;
L Okit provides new-disposition-change-notify-process-close requirements management process;
Okit by introducing the necessary processes to make typical projects work in an orderly and smooth manner.
Third, improve the quality
L Okit, as long as the assignment of the task, the entry of the defects, will certainly be dealt with;
L Okit, as long as the submitted code and documents, all versions can backtrack, the version is no longer confusing;
L Okit, each requirement change can be handled in a controlled manner;
Okit through the strengthening of the team software process, improve the quality of products, which fit the modern quality management ideas, process determines the quality.
Four, reduce costs
L Okit use is very simple, just remember a set of user name password, you can use the many functions provided by Okit;
L Okit Maintenance is very simple, only need to install a server, maintain a set of basic data, the client does not need to install, through the browser can be used;
L Okit allows leaders to  they want when they need to focus on a project, and no longer requires project managers to spend a lot of time organizing reports and sending emails.
L Okit can be deployed to the Internet so that project teams can be distributed anywhere and can work together as long as they can connect to the network.
1 servers, 5 minutes, set up a management environment to manage 100 projects, provide project management services for 500 people, this is okit, it can not only improve efficiency, make work orderly, improve quality, it can also reduce costs.

Okit is not designed to monitor team members, it exists to improve team members ' efficiency;
Okit is not designed to be certified by Cmm/cmmi or ISO9000, but
Through Okit, these standard ideas can actually bring tangible benefits to your organization.
This is Okit, a new generation of project management software based on Web2.0.

What are the current popular source program version management software and project management software, and what are the pros and cons?