What do this numbers for wireless routers mean?

Question

802.11g

802.11g+

802.11b

802.11a

Are they supposed to be better than the next if so which is the best

Answer 1

IEEE 802.11 is a set of standards for local wireless communication which has evolved through several revisions, including the numbers you list.   I don't know what g+ is, and guess it to be a manufacturer's proprietary 'enhancement' to the g standard.  

802.11a used the 5GHz band which is a relatively uncrowded spectrum, so preventing interference  from other devices (microwaves, phones, baby monitors, etc) but suffered from a lower effective signal range.  Subsequent 802.11 revisions use the more crowded and therefore potentially more interference prone 2.4GHz band, however overall performance saw 802.11b adopted as a standard which has since been refined and speed-boosted through g and (almost) n revisions.  

Average routers currently sold offer the g standard (54mbps) and allow backwards compatibility with b with mixed mode networks if required.  Spend more on n for the extra speed and range if your equipment can use it, and bear in mind this standard is not finalised.

See a complete and long reference at Wikipedia:

http://en.wikipedia.org/wiki/802.11

Answer 2

802.11a - The slowest, oldest type of wireless broadcasting.

802.11b - An older, but still mostly supported type of wireless broadcasting.

802.11g - Right now, the standard for wireless broadcasting and is faster than 802.11b.

802.11g+ - An upgraded version of 802.11g with extended range and speed.

802.11n - The fastest and best wireless broadcast.

Answer 3

in a way its a standard if you want a good explination of it check out wikipedia and search 802.11, n is the best but its technically not out due to some lawsuit

Answer 4

802.11g/g+ is the best.