| 31 May | |
| Magellan has posted Triton 200 and 300 software version 1.88. | |
| Magellan has posted Triton 400 software version 1.72. | |
| Magellan has posted Triton 500 software version 1.85. | |
| Magellan has posted Triton 1500 software version 1.42. | |
| Magellan has posted Triton 2000 software version 1.46. | |
| 28 May | |
| Garmin has posted ANT Agent software version 2.2.1. | |
| Garmin has posted ANT Agent with Training Center software version 2.2.1. | |
| Garmin has posted ANT Agent for Mac software version 2.1.0. | |
| Garmin has posted Training Center with ANT Agent for Mac software version 2.1.7.1. | |
| Garmin has posted GPSMAP 496 software version 4.00. | |
| Garmin has posted GPSMAP 495 software version 2.40. | |
| 27 May | |
| Garmin has posted Mobile XT for Symbian S60 3rd Edition software version 5.00.50. | |
| 26 May | |
| Garmin has posted BaseCamp for Mac software version 2.0.0.9 Beta. | |
| 22 May | |
| Magellan has posted Content Manager - ToolBox. | |
| 21 May | |
| Garmin has posted GPS 16 software version 3.10. | |
| 20 May | |
| Lowrance has posted HDS-5 update version 2.0.30.50. | |
| Lowrance has posted HDS-5m update version 2.0.30.50. | |
| Lowrance has posted HDS-5x update version 2.0.30.50. | |
| Lowrance has posted HDS-7 update version 2.0.30.50. | |
| Lowrance has posted HDS-7m update version 2.0.30.50. | |
| Lowrance has posted HDS-8 update version 2.0.30.50. | |
| Lowrance has posted HDS-8m update version 2.0.30.50. | |
| Lowrance has posted HDS-10 update version 2.0.30.50. | |
| Lowrance has posted HDS-10m update version 2.0.30.50. | |
| Magellan has posted information about their 2009 Spring Map Update. | |
| 19 May | |
| Garmin has posted GPS 16x software version 3.10. | |
| Garmin has posted GPS 18x PC/LVC software version 3.10. | |
| Garmin has posted GPS 18x 5Hz software version 3.10. | |
| Garmin has posted GPSMAP 4008 software version 5.10. | |
| Garmin has posted GPSMAP 4010 software version 5.10. | |
| Garmin has posted GPSMAP 4012 software version 5.10. | |
| Garmin has posted GPSMAP 4208 software version 5.10. | |
| Garmin has posted GPSMAP 4210 software version 5.10. | |
| Garmin has posted GPSMAP 4212 software version 5.10. | |
| Garmin has posted GPSMAP 5008 software version 5.10. | |
| Garmin has posted GPSMAP 5012 software version 5.10. | |
| Garmin has posted GPSMAP 5015 software version 5.10. | |
| Garmin has posted GPSMAP 5208 software version 5.10. | |
| Garmin has posted GPSMAP 5212 software version 5.10. | |
| Garmin has posted GPSMAP 5215 software version 5.10. | |
| 18 May | |
| DeLorme has released Topo USA 8.0. | |
| Magellan has posted VantagePoint 1.6. | |
| Garmin has posted Oregon 200 software version 2.98 Beta. | |
| Garmin has posted Oregon 300 software version 2.98 Beta. | |
| Garmin has posted Oregon 400t software version 2.98 Beta. | |
| Garmin has posted Oregon 400c software version 2.98 Beta. | |
| Garmin has posted Oregon 400i software version 2.98 Beta. | |
| 15 May | |
| Garmin has posted nuvi 885 software version 4.50. | |
| Garmin has posted nuvi 865 software version 4.50. | |
| Garmin has posted nuvi 855 software version 4.50. | |
| Garmin has posted nuvi 880 software version 4.50. | |
| Garmin has posted nuvi 860 software version 4.50. | |
| Garmin has posted nuvi 850 software version 4.50. | |
| 13 May | |
| Garmin has posted eTrex Venture Cx software version 3.10. | |
| Garmin has posted eTrex Legend Cx software version 3.10. | |
| Garmin has posted eTrex Vista Cx software version 3.10. | |
| Garmin has posted Communicator Plugin with myGarmin Agent software version 2.7.1. | |
| Garmin has posted Communicator Plugin for Mac software version 2.7.1. | |
| Garmin has posted Communicator Plugin software version 2.7.1. | |
| Garmin has posted eTrex Vista HCx software version 3.00. | |
| Garmin has posted eTrex Legend HCx software version 3.00. | |
| 12 May | |
| Garmin cityXplorer maps are now available to purchase and download. | |
| Garmin has posted nuvi 750 software version 4.80. | |
| Garmin has posted nuvi 760 software version 4.80. | |
| Garmin has posted nuvi 770 software version 4.80. | |
| 11 May | |
| Garmin has posted GPSMAP 4008 software version 5.00. | |
| Garmin has posted GPSMAP 4010 software version 5.00. | |
| Garmin has posted GPSMAP 4012 software version 5.00. | |
| Garmin has posted GPSMAP 4208 software version 5.00. | |
| Garmin has posted GPSMAP 4210 software version 5.00. | |
| Garmin has posted GPSMAP 4212 software version 5.00. | |
| Garmin has posted GPSMAP 5008 software version 5.00. | |
| Garmin has posted GPSMAP 5012 software version 5.00. | |
| Garmin has posted GPSMAP 5015 software version 5.00. | |
| Garmin has posted GPSMAP 5208 software version 5.00. | |
| Garmin has posted GPSMAP 5212 software version 5.00. | |
| Garmin has posted GPSMAP 5215 software version 5.00. | |
| 08 May | |
| Garmin has posted zumo 660 software version 2.80. | |
| Garmin has posted FlightPlan Migrator with USB Drivers software version 3.00. | |
| 07 May | |
| Garmin has officially announced the Oregon 550. (press release) | |
| Garmin has officially announced the Oregon 550t. (press release) | |
| 01 May | |
| Garmin has posted Edge 605/705 software version 2.70. | |
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Comments, complaints, etc.... Allory Deiss.