[nailer]

88 (taking a stab here as I was pretty young):

DTP

OO

RISC CPUs

'graphics' (as in render farms)

98:

Linux, Apache, Mozilla, OSS in general

Perceptual audio compression : MP3 (layer3.org, MP3 vs TwinVQ, codecs created during the period before Fraunhofer announced the source code it uploaded to ISO without a license and that people had been working on for free, in fact had a license and everyone owed them 10 grand).

2008:

Cloud

mobile (location in particular). Think Foursquare vs Gowalla vs Burbn, Grindr, other early mobile location-aware apps. App stores for popularised by Apple that same year.

AJAX, Rails

blogging.

[neilwilson]

88

OSI network stacks. They were going to replace the 'old' Internet protocols.

Relational Databases, SQL and two phase commit.

Formal methods and verification.

[sitkack]

> Formal methods and verification.

Still emerging.