Somebody designed a logo for me and gave it to me in PNG and Jpg format. I upgraded to get the logo design in "editable" formats. He sent me it in A1 and EPS formats. How do I edit a logo in A1 Format, or EPS format without having to subscribe to adobe illustrator?
Adobe Illustrator (.ai) files and Encapsulated Postscript (.eps) files can be edited in just about any modern drawing program, such as CorelDraw, (possibly) Inkscape. While these files were likely created in Adobe Illustrator you may be able to extract/import the file for editing purposes. You can also use Adobe Photoshop (type programs) by "rasterizing" (setting a pixel size) the file. I would start by downloading an open source editor and see if you can do what you need with that.
Inkscape is supposed to let you open and edit ai files. According to it's docs, it converts files to SVG format and data is lost if you try to return to ai format.
While Inkscape is free and runs on the major desktop platforms, I could not get to run on my mac.
If you want to simply view the file but not edit it, there is a popular vector app called Sketch that imports ai as static images but retains their vector resolution.
Inkscape is Professional level (free) open-sourced graphic editor that is supported on Linux, Windows and Mac 10.5-10.10
Mac Users must also install the XQuartz (free) open-sourced library
Here is a link to known apps that can open ai files: http://bohemiancoding.com/sketch/