This is the most basic and widespread tool for creating figures, posters, and presentations in most labs. Although we would recommend supplementing with the above tools, PowerPoint will allow you to get the basics done. 

This is a pricier and more advanced version of Inkscape. It allows you to create anything you can imagine but comes with a steep learning curve. However, if you are willing to commit, there is no limit to what you could do. 

This is a more advanced tool that allows you to draw vector graphics from scratch. Given its flexibility, it can be used for creating figures, and posters. It can also generate high-quality vector images of your own data and create highly specific personalized graphics.

This is a must-have tool for professional figures designed specifically for science. There are pre-filled biological pathways, proteins, structures, etc. to make detailed scientific figures, in addition to separate elements that can be used to build anything you can imagine.

This is an amazing tool for all types of graphic design. Although the options are limited for scientific figures, it's a fantastic tool for creating a wide variety of graphics, presentations, posters, etc.