What are some alternatives?
When comparing PathVisio and asciiflow, you can also consider the following products
Visio - Simplify and communicate complex information using data-linked diagrams.
Playscii - Full-featured ASCII art and graphic editor and game creation tool
LucidChart - LucidChart is the missing link in online productivity suites. LucidChart allows users to create, collaborate on, and publish attractive flowcharts and other diagrams from a web browser.
Ascii Generator 2 - Ascii Generator 2 (Ascgen2) is an application to convert images into high quality ASCII art - text...
draw.io - Online diagramming application
Charaster - Open-source ASCII art editor for browser-based, raster-style editing