So here is a list of Wordpress 2.3 compatible plugins from letter A to letter D, each of them has a link that brings you to the developers website and you can download it from there:

A-D

1. 404 Notifier (http://alexking.org/projects/wordpress) 1.0
2. A Year Before (http://wuerzblog.de/2006/12/27/wordpress-plugin-a-year-before/) 0.6
3. About Me widget (http://samdevol.com/about-me-widget-for-wordpress/) 0.98 + 1.0
4. Absolute Comments (http://planetozh.com/blog/my-projects/absolute-comments-manager-instant-reply//) 1.0
5. Accessible RSS News Ticker widget (ANT) (http://wordpress.org/extend/plugins/accessible-news-ticker/) 0.3
6. AddMySite (AMS) (http://perishablepress.com/press/2006/11/01/addmysite-plugin-for-wordpress/) 0.77
7. AddQuicktag (http://bueltge.de/wp-addquicktags-de-plugin/120/) 0.9
8. Addressbook (http://samwilson.id.au/blog/addressbook-plugin) 0.7
9. Add Signature (http://www.dagondesign.com/articles/add-signature-plugin-for-wordpress/) 1.3
10. Add-Meta-Tags (http://www.g-loaded.eu/2006/01/05/add-meta-tags-wordpress-plugin/) v1.6 (Rel. Nov 07 2007)
11. Admin Drop-Down Menus (http://www.stuff.yellowswordfish.com/admin-drop-down-menus/) 2.1
12. Adsense Deluxe (http://www.acmetech.com/blog/2005/07/26/adsense-deluxe-wordpress-plugin/) 0.8
13. Adsense Manager (http://wordpress.org/extend/plugins/adsense-manager/) 2.4
14. Advanced Category Excluder (http://wordpress.org/extend/plugins/advanced-category-excluder/) 1.0.2
15. Advanced Permalinks (http://urbangiraffe.com/plugins/advanced-permalinks/) 0.1.8
16. Advanced Search (http://www.zirona.com/software/wordpress-advanced-search) 1.0 and higher
17. Advanced Tag Entry (http://www.poplarware.com/tagplugin.html) 1.02
18. Advanced TinyMCE (http://www.mkbergman.com/?page_id=383) .5
19. Ajax Post Save (http://blog.bull3t.me.uk/projects/ajax-post-save/) 1.0
20. AJAX Comments (http://wordpress.org/extend/plugins/ajax-comments-208/) 2.08
21. Akismet (http://akismet.com/) 2.0.2
22. aLinks (http://www.alinks.org/) 1.0rc1
23. All-in-One SEO Pack (http://wp.uberdose.com/2007/03/24/all-in-one-seo-pack/) 1.2.7.3
24. AMM Media Manager (http://www.sozu.co.uk/software/amm/) 1.5
25. Anarchy Media Player (http://an-archos.com/anarchy-media-player) 2.0
26. Anti email spam (http://urbangiraffe.com/plugins/anti-email-spam/) 1.1
27. Archives for a category (http://kwebble.com/blog/2007_08_15/archives_for_a_category) 1.2
28. Arkayne Content Linking (http://www.arkayne.com) 1.7
29. Articles (http://alexking.org/projects/wordpress) 1.2
30. Audio Player (http://www.1pixelout.net/code/audio-player-wordpress-plugin/) 1.2.3
31. Audit Trail (http://urbangiraffe.com/plugins/audit-trail/) 1.0.5
32. AWSOM Archive (Drop Down Archive) (http://www.awsom.org/awsom-drop-down-archive/) 1.2.0
33. AWSOM News Announcement (http://www.awsom.org/awsom-easier-news/) 1.3.0
34. AWSOM Pixgallery (http://www.awsom.org/awsom-pixgallery/) 4.4.3 SE
35. BackUpWordPress (http://wordpress.designpraxis.at/plugins/backupwordpress/) 0.3.2
36. Bad Behavior (http://www.bad-behavior.ioerror.us/) 2.0.10
37. Batch Validator (http://wordpress.designpraxis.at/plugins/batch-validator/) 1.2
38. Better Blogroll (http://www.dyers.org/blog/better-blogroll-widget-for-wordpress/) 2.13
39. BBPress Latest Discussions (http://www.atsutane.net/2006/11/bbpress-latest-discussion-for-wordpress/) .9
40. BBPress Post (http://dev.mbzeus.net/2007/10/29/bbpress-post-005-released/) 0.05
41. BirdFeeder for WordPress (http://turmsegler.net/20070624/wp-plugin-birdfeederwp/) 1.0.4
42. Blix-Style Archive (http://rmarsh.com/plugins/blix-archive/) 1.0
43. BlogBlogs User Info (http://wordpress.org/extend/plugins/bbuinfo-blogblogs-user-info-plugin/) 0.84
44. Blogorola (http://ma.tija.cc/blogorola-wordpress-plugin/) 0.4
45. BlogRush Click Maximizer (http://www.maxblogpress.com/plugins/bcm/)
46. BlogStats PCC (http://perishablepress.com/press/2006/08/28/blogstats-pcc-plugin/) 1.9.9
47. Bluetrait Event Viewer (http://wordpress.org/extend/plugins/bluetrait-event-viewer/) 1.3
48. Bot Tracker (http://wordpress.designpraxis.at/plugins/bot-tracker/) 1.0
49. Breadcrumb Navigation XT (http://mtekk.weblogs.us/code/breadcrumb-nav-xt) 1.9.3
50. Break-out-of-frames (http://www.g-loaded.eu/2006/01/05/break-out-of-frames-wordpress-plugin/)
51. btc-meta-description (http://www.bitcycle.de/wordpress/plugins/btc-meta/) 0.4
52. btc-meta-keywords (http://www.bitcycle.de/wordpress/plugins/btc-meta/) 0.4
53. btc-meta-robots (http://www.bitcycle.de/wordpress/plugins/btc-meta/) 0.5
54. Category LiveBookmarks Plus (http://perishablepress.com/press/2006/08/07/category-livebookmarks-plus/) 2.3.0
55. Category Order (http://www.coppit.org/code/) 2.0.1
56. Category Page (http://wordpress.org/extend/plugins/page2cat/) 0.4.4
57. Category Tagging (http://blog.bull3t.me.uk/projects/category-tagging/) 2.4
58. Category Visibility-P7 Rev (http://www.tastycornbread.com/category-plugin/)
59. cForms (http://www.deliciousdays.com/cforms-plugin) 5.4
60. Chunk Urls (http://www.village-idiot.org/archives/2006/06/29/wp-chunk/) 2.0
61. Cimy Navigator (http://www.cimatti.it/blog/cimy-wordpress-plugins/cimy-navigator/) 0.4.1
62. Cimy Swift SMTP (http://www.cimatti.it/blog/cimy-wordpress-plugins/cimy-swift-smtp/) 1.1.2
63. Cimy User Extra Fields (http://www.cimatti.it/blog/cimy-wordpress-plugins/cimy-user-extra-fields/) 1.0.0
64. Cite this (http://wordpress.org/extend/plugins/cite-this/) 0.2.3
65. Clean Options (http://www.mittineague.com/dev/co.php) Beta 0.9.4
66. Click Tags (http://www.stuff.yellowswordfish.com/click-tags/) 1.0
67. Close Old Posts (http://wordpress.org/extend/plugins/close-old-posts/) 1.1
68. Code Auto Escape (http://priyadi.net/archives/2005/09/27/wordpress-plugin-code-autoescape/) 2.0
69. Code Converter (http://bueltge.de/wp-code-converter-fuer-xhtmlxml-Plugin/376/) 0.2
70. Codex Search (http://redalt.com/Resources/Plugins/Codex+Search) 2.0
71. ©Feed (http://bueltge.de/wp-feed-plugin/204/) 3.81
72. Collapsible Archive Widget (http://wordpress.org/extend/plugins/collapsible-archive-widget/) 2.0.1
73. Comment Highlighter (http://code.google.com/p/comment-highlighter/) 0.4
74. CommentLuv (http://www.fiddyp.co.uk/commentluv-wordpress-plugin/) 0.993
75. Comment Policy (http://www.g-loaded.eu/2006/04/02/comment-policy-wordpress-plugin/)
76. Comments Quicktags + (http://dancameron.org/wordpress/wordpress-plugins/comment-quicktags-10/) 1.1
77. Comment Recovery (http://wordpress.designpraxis.at/plugins/comment-recovery/) 1.0
78. Compact Archives (http://rmarsh.com/plugins/compact-archives/) 1.0.6
79. Contact Form (http://www.douglaskarr.com/projects/wp-contactform/) 2.0.7 (by Douglas Karr)
80. Contact Form 7 (http://ideasilo.wordpress.com/2007/04/30/contact-form-7/) 1.4.4
81. Contextual Related Posts (http://weblogtoolscollection.com/) 1.1
82. Counterize II (http://www.navision-blog.de/counterize) 2.10
83. Creative-Commons-Configurator (http://www.g-loaded.eu/2006/01/14/creative-commons-configurator-wordpress-plugin/) v1.0
84. Cricket Moods (http://wordpress.org/extend/plugins/cricket-moods/) 3.6
85. Cron Developers Demo (http://wordpress.designpraxis.at/plugins/cron-demo/) 1.1
86. Cross-references Plugin (http://francesc.hervada.org/wordpress.html) 1.1
87. Custom Query String Reloaded with Tag Support (http://www.transycan.net/blogtest/2007/10/30/custom-query-string-reloaded-for-wordpress-23-with-tag-support/) 2.9
88. CyStats Statistics (http://www.cywhale.de/cystats-wordpress-statistik-plugin/cystats-download-und-installation/) 0.8.0
89. Custom Smilies (http://onetruebrace.com/custom-smilies) 1.0
90. Dagon Design Sitemap Generator (http://www.dagondesign.com/articles/sitemap-generator-plugin-for-wordpress/) 3.1
91. Dashboard Editor (http://anthologyoi.com/plugins/) 0.1
92. Delete Comment IP (http://www.tamagothi.de/2006/10/27/wp-plugin-delete-comment-ip/) 0.1
93. Demo Mode (http://wordpress.designpraxis.at/plugins/demo-mode/) 1.0
94. Democracy (http://blog.jalenack.com/archives/democracy/) 2.0.1
95. Diagnosis (http://nlindblad.org/wordpress/diagnosis) 1.2.1
96. Did You Pass Math? (http://www.herod.net/dypm/) 3.1
97. Disable wpautop (http://urbangiraffe.com/plugins/disable-wpautop/) 1.0
98. Disk Usage (http://wordpress.designpraxis.at/plugins/disk-usage/) 2.0
99. DoFollow (http://www.semiologic.com/software/wp-fixes/dofollow/) 2.0
100. Download Counter ‘Advanced’ (http://www.stuff.yellowswordfish.com/download-counter-advanced/) 1.0
101. Download Counter ‘Lite’ (http://www.stuff.yellowswordfish.com/download-counter-lite/) 1.2
102. Draft Notification (http://www.dagondesign.com/articles/draft-notification-plugin-for-wordpress/) 1.2
103. Drain Hole (http://urbangiraffe.com/plugins/drain-hole/) 2.0.0
104. DropCap First Character (http://www.rc.au.net/blog/2006/07/27/dropcap-first-character-wordpress-plugin/) 1.0.1
105. Drop-Down Post List (http://www.dagondesign.com/articles/drop-down-post-list-plugin-for-wordpress/) 1.3
106. DualFeeds (http://www.scratch99.com/wordpress-plugin-dualfeeds/) 1.1
107. Duplicate Sidebar Widgets - WordPress (http://www.lancelhoff.com/2007/08/29/wordpress-duplicate-sidebar-widgets/) 1.0
108. dTabs - Dynamic Tabs Plugin (http://dynamictangentconceptions.dtcnet.co.uk/downloads/wp-plugins/dtabs-dynamic-tabs-wordpress-plugin/ 1.0.4

Ok this is the end of the list A-D plugins, I hope you found what you’ve been searching for.