Max is an actively used json format created in 1990.

29Years Old 1,025Users 0Jobs

Example code from Linguist:

max v2;#N vpatcher 109 76 569 534;#P toggle 31 168 21 0;#P button 360 299 15 0;#P button 322 299 15 0;#P button 284 299 15 0;#P button 246 299 15 0;#P window setfont Verdana 12.;#P window linecount 1;#P newex 246 168 43 472055820 r jojo;#B color 5;#P newex 31 386 45 472055820 s jojo;#B color 5;#P newex 246 254 162 472055820 route 0 1 2 3;#P newex 31 338 88 472055820 append toto;#P newex 31 296 35 472055820 % 4;#N counter;#X flags 0 0;#P newobj 31 251 75 472055820 counter;#P newex 31 209 75 472055820 metro 250;#P newex 164 96 32 472055820 t 0;#P message 164 55 136 472055820 Goodbye World !;#P newex 31 96 32 472055820 t 1;#P message 31 55 113 472055820 Hello World !;#P connect 0 0 1 0;#P fasten 3 0 15 0 169 146 36 146;#P connect 1 0 15 0;#P connect 15 0 4 0;#P connect 4 0 5 0;#P connect 5 0 6 0;#P connect 6 0 7 0;#P connect 7 0 9 0;#P connect 2 0 3 0;#P connect 10 0 8 0;#P connect 8 0 11 0;#P connect 8 1 12 0;#P connect 8 2 13 0;#P connect 8 3 14 0;#P pop;
Edit

Last updated February 11th, 2019