system	supplier	details
1 Maydenhead Locator System / QTH	amateur radio / ham radio	free, enigmatic
2 NAC	Toronto based	, free, enigmatic
3 geocode.xyz / 3geonames.org ***)	Ottawa based	free, enigmatic
4 what3words ***)	UK based Comparison	proprietary, enigmatic Piracy of Wcode? (19)
5 mapcode	TomTom, Nokia etc.	free, enigmatic
6 geohash.org		free, enigmatic
7 OpenLocationCode / plus code	Google	free, enigmatic
8 xaddress	Paraguay based	free, enigmatic
9 eLoc/	mapMyIndia	enigmatic
10 zip.pr / digital door number	Hyderabad based	proprietary, enigmatic
11 mapta.gs	Bangalore based	enigmatic
12 OkHi	Nairobi based	enigmatic
13 Nima	Senegal based	enigmatic
14 snooCode	Ghana based	enigmatic
15 edress	Lebanon based	enigmatic
16 Addressing the unaddressed	Dublin / Kolkata	migrated to Pluscode (7)
17 Q-codes	Belgium based	proprietary, enigmatic
18 H3	UBER Engeneering	hexagones, enigmatic
19 Wcode	www.wolo.codes www.wolo.codes/patent	Nepal/Bangalore Origin of w3w (4) ?

and many other reinventions of the (squared?) wheel

Just one wheel is round, metrical, local, imaginable, quantified.

Divides the horizon into 12 consumer friendly directions and has all characteristics to be a standard for orientation purposes.

Case-by-case licensing with symbolical fees.

Remark: If the system would be uncontrolled open, immediatly hundreds of "better" standards would arise