2 base/libs Base Libraries
6 sys/fs Filesystem / Blockdevice Utilities
8 sys/serial Serial communications & terminal emulation
9 sys/utils System Utilities
10 sys/firmware Firmware for Hardware Devices
11 sys/hw Hardware related System utilities
12 app/archive Compression and Archivers
15 app/crypto Cryptography
16 app/debug Debugging and Analyzing
17 app/editor Editor and Pager
19 net/acct IP Accounting
21 net/debug Network Analyzing
23 net/fs Network Filesystems
27 net/misc Networking Misc
29 net/perf Networking Performance
30 net/ppp PPP / PPPoE / PPTP
33 net/route Routing and Bridging
34 net/security Network Security
35 net/voip Voice-over-IP
40 x11/apps Xorg applications
41 x11/utils Xorg utilities
42 x11/drivers Xorg server and drivers
45 x11/libs Xorg libraries
46 libs/audio Audio Libraries
47 libs/comp Compression Libraries
48 libs/crypto Crypto Libraries
49 libs/data XML and JSON Libraries
50 libs/db Database Libraries
51 libs/fonts Font Libraries
52 libs/image Image Libraries
53 libs/misc Misc Libraries
54 libs/net Networking Libraries
55 libs/video Video Libraries
56 dev/lang Programming Languages
58 dev/python Python modules
59 dev/scm Souce Code Management
60 dev/tools Programming Tools
61 dev/header Header files