Project Management is used everywhere, from the smallest LLC to the largest multi-billion dollar corporation. Project Management requires structure and organization and the ability to manage and analyze data. There are web based tools like zoho.com and standalone tools like Microsoft Project. While dedicated to the task, these tools can sometimes be complicated and overwhelming to use.
Excel is a powerful tool that we sometimes force to do tasks better accomplished with other software. It is often, however, the best way if your needs are simple, you just want to experiment or you do not have a lot of funding for dedicated solutions.
If you organize your projects like the above picture, maybe Excel can help.
Dedicated software will likely be better at almost any Project Management task, but solutions like those described in the below link can be useful depending on your needs.