JavaScript error logging services

• http://www.errorify.com/ - source maps
• http://errorception.com/ - translate error messages to English
• http://www.exceptionhub.com/
• http://jserrlog.appspot.com/
• http://www.muscula.com/ - source maps, translate error messages to English
• https://www.airbrake.io/ - tracekit, source maps
• http://www.errorstack.com/
• https://www.proxino.com/
• http://jslogger.com/
• http://qbaka.net/
• http://www.bugsense.com/
• https://crashlog.io/
• http://www.exceptional.io/
• https://www.getsentry.com/ - source maps, tracekit
• http://raygun.io/ - tracekit
• https://bugsnag.com/ - source maps
• https://rollbar.com/ - source maps
• http://jserror.net/
• http://www.geterrorzero.com/
• https://www.debuggify.net/ - source maps, tracekit
• http://www.errzero.com/
• https://www.honeybadger.io/
• http://trackjs.com/
• https://getcoalmine.com/ [DEAD, Nov 8, 2013]
• http://damnit.jupiterit.com/ [DEAD]
• http://rescuejs.com/ [DEAD, acquired by Bugsnag]
• https://errplane.com/ [DEAD, pivoted]