GraphForm is an exercise in graph to test-drive the well-known Dijkstra algorithm.

In the main panel you can click the left mouse button to create a new node or to select an existing one. After you have selected a node you can select an edge that is departing from it.

To create a new edge you have to select a node, position the mouse pointer on another node and click the right mouse button. Note that you create a directed edge- to create a bidirectional edge you will have to repeat the operation swapping the nodes.
You may delete the selected node or edge choosing the appropriate menu item on top.

On the top right panel data about the selected node and edge is shown - you can modify it. To find the shortest path between two nodes you have to select a node, choose the Find Shortest Path menu item, and click on the node you want to find a path into.

You can load/save graphs.

The license of this software is Free, you can free download and free use this graphing software.