Walkaholic has been built thanks to many different Open Source projects and to resources under Creative Commons license:

• © OpenStreetMap contributors, ODbL
• GraphHopper API
• Gson under Apache License 2.0
• Apache HttpCore under Apache License 2.0
• Apache HttpClient Mime under Apache License 2.0
• Volley under Apache License 2.0
• Lost under Apache License 2.0
• Icons made by Yannick from www.flaticon.com is licensed by CC 3.0 BY
• Icons made by Freepik from www.flaticon.com is licensed by CC 3.0 BY
• Icons made by Revicon from www.flaticon.com is licensed by CC 3.0 BY
• Icons made by Elegant Themes from www.flaticon.com is licensed by CC 3.0 BY
• Icons made by Egor Rumyantsev from www.flaticon.com is licensed by CC 3.0 BY
• Icons made by TutsPlus from www.flaticon.com is licensed by CC 3.0 BY
• Icons made by Smashicons from www.flaticon.com is licensed by CC 3.0 BY
• Icons made by Dave Gandy from www.flaticon.com is licensed by CC 3.0 BY
• Icons made by Eleonor Wang from www.flaticon.com is licensed by CC 3.0 BY
• Icons made by Bogdan Rosu from www.flaticon.com is licensed by CC 3.0 BY
• Icons made by Gregor Cresnar from www.flaticon.com is licensed by CC 3.0 BY
• Icons made by monkik from www.flaticon.com is licensed by CC 3.0 BY
• Icons made by Cursor Creative from www.flaticon.com is licensed by CC 3.0 BY
• Icons made by Iconnice from www.flaticon.com is licensed by CC 3.0 BY
• Icons made by Rami McMin from www.flaticon.com is licensed by CC 3.0 BY
• Icons made by OCHA from www.flaticon.com is licensed by CC 3.0 BY
• Icons made by Google from www.flaticon.com is licensed by CC 3.0 BY
• Icons made by Pixel perfect from www.flaticon.com is licensed by CC 3.0 BY
• Icons made by Hadrien from www.flaticon.com is licensed by CC 3.0 BY
• Icons made by Scott de Jonge from www.flaticon.com is licensed by CC 3.0 BY
• Icons made by Robin Kylander from www.flaticon.com is licensed by CC 3.0 BY