Online tool for making graphs (vertices and edges)? Anyone know of an online tool available for making graphs (as in graph theory - consisting of edges and vertices)? I have about 36 vertices and even more edges that I wish to draw. 
(why do I have so many? It's for pathing in a game)
Only tool available to me right now is MS Paint and it would be very messy.
Edit:
I'm not actually looking for a 'standard' - just some way to neatly draw a set of vertices and edges, preferably without having to write code. I was planning to screenshot the pic and use it in a question on gamedev but I managed to solve the problem for now. Thanks for all the answers. I still prefer GeoGebra because it accessible online, neat, accurate, aligns elements to a grid, has consistent shapes, and has a high degree of customization available.
 A: I coded up a thing called Graphrel that might be helpful. It focuses not so much on presentation as on graph theory analysis. Currently it supports WYSIWYG editing and an interactive d3 forcelayout; also counts the number of vertices/edges, calculates connected components, as well as reflexivity/symmetry/transitivity etc. of its underlying relation. I'm still adding new features so feel free to make suggestions.
A: I created an open source graph drawing library too: https://github.com/anvaka/VivaGraphJS. 


*

*Here is a demo: http://www.yasiv.com/graphs#Bai/rw496 

*A video showing the same: http://www.youtube.com/watch?v=L5KrtGB8oA4
It requires some programming knowledge but I'd be really glad to help.
A: You can also use GasTeX, which is a package for LaTeX for drawing graphs.
Example code:
\begin{gpicture}
  \node[Nmarks=i](A)(0,0){0}
  \node(B)(20,0){1}
  \node[Nmarks=f](C)(40,0){2}
  \drawedge(A,B){$a$}
  \drawloop(B){$b$}
  \drawedge(B,C){$c$}
\end{gpicture}

A: For drawing graph, the best is TIKZ but it does take some time to study, an alternate is graphviz

Rollbacked:
For drawing 2D geometry, try GeoGebra or Sketchpad (licensed).
For drawing 3D geometry, try Cabri 3d (licensed).
A: If you are typesetting using LateX, try LateXDraw. It is to draw and not to analyze the graph.
A: I've created a simple web application called Graphy. It's basing on a great library Cytoscape.js.
Features:

*

*Importing graphs from GraphML, JSON Graph Format or JSON format used by Cytoscape.js

*Exporting graphs to GraphML, JSON format used by Cytoscape.js and image (PNG and JPG)

*Computing and visualization of basic algorithms (BFS, DFS, Dijkstra's algorithm, Kruskal's algorithm, Karger–Stein algorithm)

*Edit Mode - adding vertices by clicking on workspace and adding edges by dragging (or by selecting an appropriate option from a context menu)

*Grouping vertices

*Changing style of nodes and edges (color, shape, thickness of edge, line style, node size)

*Bending edges

*Shortcuts support

*Displaying the last action with possibility to undo

*Copying, cutting, pasting of nodes and edges

*Support for mobile and touch devices

The application is still in a development state – any suggestions and feedback are welcomed!

A: Draw.io is really nice and user friendly. It is free and open source. There's a Desktop version available.
A: yEd is a free cross-platform application that lets you interactively create nodes and edges via drag and drop, format them with different shapes and styles, and apply various graph layout algorithms to arrange the graph neatly.
A: http://illuminations.nctm.org/ActivityDetail.aspx?ID=20
In the above link you can have a tool where you can draw graphs, check degree, find eulerian path, hamiltonian path.
A: GraphOnline.ru lets you create online an incidence matrix or an adjacency matrix, and it automatically plots the graph for you.
A: Creately offers a nice WYSIWYG interface for drawing graphs.
A: Small service but easy to use http://graph.unick-soft.ru/en/
A: I think you're looking for something like:
Gliffy.com
Creately.com
A: I have found Almende in this list. I have extended it a little bit.
A: We wrote an Android app called Grapher for testing algorithms and exporting to tikz.
Screenshot is available on Grapher · GitHub, here are some screenshots:

A: One very flexible package is CaRMetal, which is an open-source alternative to Geometer's Sketchpad. It works quite well, I've found, and can export to multiple formats.
A: For a more simplistic graph drawing program, see CMap at http://cmap.ihmc.us.  It is a concept modeling tool which has many export and import formats, including a text tab-delimited format for triples (which it calls propositions).
CMap is more aligned to non-coders such as k-12 students and college, managers, etc., who want to model (i.e., graphs schemas and instance graphs) without all of the syntax of the above tools.
Another graph drawing tool, with fewer import/export features, is at Inspiration.com.
Roy
A: If you need a really quick solution to draw graphs quickly for pedagogical examples you can use https://graphonline.ru/en although its not ideal.
But it works and you can just click the nodes where you need them and join them up.

A: You could try http://bl.ocks.org/fancellu/2c782394602a93921faff74e594d1bb1 and just edit the data (JSON) part
