N - P; Update

NNN
N2yo* - Realtime satellite tracking - Geo
Nabaztag* - Get info & communicate thru wi-fi rabbit device - Communicate
Nabbr - Create & share lists - List
Nakedandangry - Design & share your wallpapers - Ecommerce
Namakkal - Store, share & tag bookmarks - Bookmark
Nat1ion - Chat while you surf - Communicate
Nativetext - Translates rss in foreign languages - Office
Naughtyamerica* - Multiplayer video sexgame - Game
Nayio - Record your music, add video & share - Multimedia
Naymz - Edit & share your own online meta profile - Identity
NBBC - B2B marketplace for video syndication - Video
Ñblog - 2.0 blog - About
Near-time - Share resources & collaborate - Organize
Neato - Tagging plug-in for Wordpress - Tag
Neavetv - Channeled tv - Video
Nederkaart~ - Refers to map mash-ups (many Dutch) - About
Neighboroo - Explore USA trends on map - Geo
Nelements - Take notes in 3D - Office
Neobinaries - Web 2.0 developers, users & experts - Community
Neoows - Tag, comment, share & discuss news - Community
Nestoria - Property search - Ecommerce
Netcocktail - Share color schemes - Design
Netjaxer - Create a 2.0 tray in windows - OS
Netmeshlid - Manage your online digital identity - Identity
Netomat - Share profiles, blogs, photos, etc - Community
Netscape - Edited & dug news - Dig
Netsquared - Share stories on remixing the web - Publish
Netvibes***** - Personal portal - Portal
Netvouz - Social bookmarking - Bookmark
Networkltd - Share research - Knowledge
Networthiq - Track, share & compare your net worth - Finance
Neurosky - Bionic interface technology - Design
Newradio - Find & vote for news - News
Newroo - Memetracker (Stealth) - Search
Newsalloy - Discover, read & share news - News
Newsatseven - Get your customized video news cast - News
Newsbump - Digg news - Dig
Newscloud - Digg news - Dig
Newsfutures - Trade on tomorrow's news today - Gamble
Newsgarbage - Post, moderate & controle news - News
Newsgator - RSS aggregation platform - RSS
Newshutch - Feedreader - News
Newsisfree - Personalize your news - News
Newsletterarchive* - Store & share your newsletters - Communicate
Newsmap*** - Rank-interfaced news (who knows what happened to Hives?) - News
Newsvine - Read, write & discuss news - News
Newzbubble - Watch your news in bubbles - News
Newzie - Monitor & aggregate news - News
Newzingo - News tag cloud; Google News mash-up - News
Newzpile - Aggregates tags-based feeds from many sources - RSS
Nexidia - Transform av data into business intelligence - Software
Neximage - Online imaging - Images
Nextaris - Social search - Search
Nextcat - Platform for entertainment professionals - Economy
Nimbuzz~ - Free mobile community calls, chats, IM - Communicate
Ning - Create social apps - Software
Ninjawords - Fast dictionary - Vocabulary
Nirbi - Find matches for carpooling - Economy
Nivio - Access your desktop from anywhere - Office
Noisely - Enter your favorite music & get continuous podcasts to your taste - Audio
Nomos~ - Live reporting on sound levels around Amsterdam Airport - Geo
Nooked - Manage & commercialize your feeds - RSS
Nooz - News for Myspace members - News
Notecentric - Take notes online - Office
Notefish - Compile & share notes online - Office
Notlong - Shorten your URL - Software
Nottr - Publish & share notes - Office
Nowpos - Voice2Email - Communicate
Nowpublic - Share, submit & revenue share news content - News
Nowsy - Customize your own start page - Portal
Nowthen - Publish & share mobile pics - Images
Nulltag - News tag clouds - News
Numbler - Excel spreadsheet online - Office
Numinalmeme - Share & vote for ideas - Knowledge
Numly - Tag & protect your content with serial numbers (formerly ESBN) - DRM
Numsum - Collaborate online on spreadsheets - Office
Nutrax - Monitor & phlog your food & fitness - VAS
Nuvvo - Build, publish & learn from courses - E-learning

OOO
Octora - Search & share feed bookmarks - RSS
Odeo - Record & share audio - Audio
Odesk* - Work as or hire remote workforce - Employment
Odiogo - Convert feeds to speech - RSS
Offermatica - Test & optimize your online marketing - Marketing
Offertrax - RSS-based shopping alerts - Ecommerce
Office-20database - Detailed spreadsheet with online Office-like apps - About
Ogle - Capture, re-use & 3D print 3D data - Personal manufacturing
Ohloh - Search indexed open source projects - Software
OK-cancel - Collaboration on interface design - Design
Oks - Digg news - Dig
Omea - Manage & enhance your feeds - RSS
Omgili - Search discussion forums - Search
Omnidrive - Store & access data - Store
On2go - News & alerts on your mobile - News
Ondergrond~ - Upload photos of public art - Images
Onerandomsite - Add & share links & surf at random - Bookmark
Onesens - Send teasing webmail messages - Communicate
Onetruemedia - Mix & share videos, photos & music - Multimedia
Onlinebookmarkmanager - Social bookmarking - Bookmark
Onlinegroups - Create a site, a group, invite & collaborate - Collaborate
Onlywire - Social bookmarking aggregator - Bookmark
Onmycity - Upload, post & share everything locally - Community
Ononemap - Find housing (map mash-up) (UK) - Geo
Onsofts - Ebay & Amazon combined shopping search - Ecommerce
Oodle - Find local classifieds - Search
Ookles - Upload & share photos - Images
Oolsi - Share links to free things - Economy
Oondi~ - Publish & share your text - Publish
Oozm - Search refined by people - Search
Openid - Distributed identity system - Identity
Openinhoud~ - Share links to and reviews of open source software - List
Openmedianetwork - Multimedia epg - Multimedia
Openomy - Upload your files & use extra apps - Store
Openpeople - Invite your friends & explore your network - Community
Openrico - Open source Java library - Software
Openstreetmap - View, edit & use geographical data - Geo
Openstudio - Create, collaborate, share, buy & sell - Economy
Openvlog - Upload & record video - Video
Opinity - Manage your reputation - Community
Opinmind - Connect opinions to people (bloggers) - Search
OPMLsearch - Dedicated OPML search - Search
Opmom - Community for mothers - Community
Opsdo - Hyper meta search - Search
Optevi - Get feeds & contextually relevant related news, blogs & discussion pages - News
Orangoo - Spelling checker - Office
Orb - Stream your media, wherever - Multimedia
Orbeon - Create Ajax forms - Software
Orbitfiles - Store, access & share files - Store
Orca - Online personal desktop - OS
Orchestrate - Task manager - Organize
Organizedwisdom - Publish & share your wisdom on health matters - Knowledge
Orgasms2~ - Share creativity & inspiration - Community
Orkut - Connect to your friends - Community
Oszone - Share code - Software
Otavo - Collaborative web search - Search
Ourmedia - Store & share data - Store
Ourstockworks - Upload, sell or buy stockphotos - Ecommerce
Ourstory - Tell & share the story of your life - Publish
Outfoxed - Social search - Search
Outorin - Gated community - Community
Oyax - Social bookmarking - Bookmark
Oyco - Meta communications toolkit - Communicate
Oyogi - Share Q&A - Knowledge

PPP
Packagemapper - Track your package on a map - Geo
Pagebites - Resume search - Employment
Pagebull - Visual search - Search
Pagecharts - Compare Alexa scores of up to 5 websites - About
Pageflakes - Personal portal - Portal
Paguna - Travel booking with 1 page Ajax interface - Ecommerce
Paird - Social matchmaking - Date
Palary - Ajax browser - Software
Paltalk - Videochat for social networks - Communicate
Pando* - Store & share data - Store
Pandora*** - Personalized radio - Audio
Pandorafm - Mash-up of Pandora & Last.FM - Audio
Panjea - Upload & share content, and get paid for it - Multimedia
Panoramio - Store your geo-tagged photos on Google maps - Geo
Parakey - Web OS - OS
Parazz - Store & share photos - Images
Parbet - Betting exchange - Gamble
Parlano - Group dialogue & document sharing - Collaborate
Partypoker - Poker tournaments - Gamble
Partysync - Meet & sms people - Community
Partyvibes~ - Publish & share parties in Holland - Geo
Pastehere - Copy-paste whatever & publish it - Publish
Pawspot - Exchange pet care - Economy
Payperpost - Buy a buzz in the bloggosphere - Marketing
Payscale - Get & share salary information - Employment
Paystage - Manage your projects - Organize
Pbase - Host & share photos - Images
Pbwiki - Make a wiki - Publish
Pearbudget - Create your budget, track your expenses - Finance
Peekaboom - Label images in a game - Economy
Peekkochat - Make every site a 'place' (Firefox plug-in) - Communicate
Peerflix - List & trade DVDs - Ecommerce
Peerimpact - Swap video P2P and get paid - Video
Peerplink - Digg Web 2.0 websites (password protected) - About
Peerprofile - Publish & share your profiles - Community
Peertrainer - Buddy up, slim down - Community
Peetscom - Treemap product comparison - Dbase
Pegasusnews - Neighborhood news, customized - News
People2pray - Manage & share prayer requests - Collaborate
Peopleaggregator - Create or join networks, build & connect your community - Community
Peoplefeeds - Aggregate personal content - RSS
Personalinfocloud - Blog about ubiquitous content - About
Personalweb - Personalized portal solution (download) - Portal
Perspectives** - Visualizes spatio-temporaly the places we inhabit - Dbase
Pervwatch - Perv mash-up - Geo
Phanfare - Upload & share photos & videos - Multimedia
Pheeder - Alert all your friends with 1 phone call - Communicate
Pheedfire - Manage, measure & monetize your feeds - RSS
Pheromonetrail - Share places & sites & persons - Geo
Philoi - Social bookmarking - Bookmark
Phixr - Edit & publish your photos - Images
Phlog~ - Upload & share photos - Images
Phonezoo - Create & share ringtones - Audio
Photoblog - Phlog solution - Publish
Photobloggr - Find tags on name; Flickr mash-up - Images
Photobucket - Upload, publish & share photos - Images
Photocrank - Add graphics & caption to your cell cam photos & share them - Images
Photomap - Add photos to locations; multi mash-up - Images
Photoshelter - Store, share, buy & sell photos - Images
Photostack - Manage images (Ajax) - Images
Photosynth*** - Rebuild the world in photos - other users' and your own - Images
Photozou - Upload, share & publish photos & video - Publish
Phrasr - Add photos to phrases; Flickr mash-up - Game
Phusebox - Community for sophisticated people - Community
Pianist - Save your notes online - Office
Picaboo - Print photo book on demand - Publish
Picasa - Find, edit & share photos - Images
Picfu - Easy pic upload & sharing - Images
Pickdee - Organize & share competitions - Game
Pickle - Share videos & photos - Multimedia
Pickspal - Compete with friends on sports bets - Game
Pickstation* - Listen to & digg music tracks - Dig
Pickupgame* - Find people locally to play games - Community
Pico - Search multimedia - Search
Picpix - Upload & share photos & videos - Multimedia
Picprizes - Publish & share photos, and win prizes - Images
Picsearch - Meta search on pics - Search
Picture2life - Edit pics online - Design
Picturecloud - 360o view on your pics - Images
Picturepush~ - Store & share videos & photos - Multimedia
Piczo - Create & share website - Community
Piggy-bank - Semantic web browser (Firefox) - Browse
Pikeo - Store, map, organize & share your photos - Images
Pinbc - Pakistani int'l business and (?!) family networking - Community
Pinger - Instant voice messaging - Communicate
Pingerati - Share your microformats - Software
Pingidentity - Identity authentication solutions - Identity
Pipeline - Track your deals & organize your team - Marketing
Pissr - People in search of gender neutral restrooms - Community
Pixagogo - Upload, manage & share photos - Images
Pixelgroup - Draw anything with others - Design
Pixelmo - Digg games - Dig
Pixelotto - Click ads & win $ 1,000,000 - Marketing
Pixerus - Edit your photos online - Images
Pixilis - Upload & share or sell media - Multimedia
Pixoh - Edit pics online; relaunched as Snipshot - Images
Pixpix - Bookmark & share media - Bookmark
Pixpo - Broadcast your video site - Video
Pixpulse - Upload & share photos and videos on your mobile - Multimedia
Pixrat - Social photo bookmarking - Bookmark
Pixsy - Ajax-based image search - Search
Placeopedia - Wiki + Google maps mash-up - Geo
Placesite - Wi-fi portal & location communities - Community
Placestodo - Post & share places & things - Geo
Planiglobe - Create your own map - Geo
Planypus - Plan events with your friends - Office
Planzo - Arrange meetings & events online & thru sms - Office
Platial - Co-create atlas & share places - Geo
Plaxo - Contact synchronizer - Office
Playdo* - Gaming community - Community
Playola - Listen to & collaborate on finding similar tunes - Audio
Playtxt - Socialize, flirt thru sms - Community
Plazes** - Claim & share your locations - Community
Plazesbadge* - Show where you are (e.g. on your blog) - Geo
Plentyoffish - Reallyreallyreally free dating service - Date
Pligg - Includes social tools - Publish
Plinkd - Social web hosting - Store
Plinkme - Publish your photos-widget or get photos for free - Images
Plogger - Open source photo gallery system - Software
Pluck - Social media solutions - Software
Plueballs - Bookmark, rank & share film news - News
Plugaid - Start or participate in discussions & take them with you - Communicate
Pluggd - Upload & share podcasts - Audio
Plugim - Submit, plug & share content - Economy
Plum - Collect, share, connect - Community
Plurn - List, listen to, create & share music - Audio
Plusmo - Fast, customizable way to get the web on your phone - Portal
Pmachine - CMS - Publish
Pobb - Personal portal - Portal
Pocketfuzz - Create & sell your own ringtones - Audio
Podango - Create a podcast station - Audio
Podbasket - Converts audio into feeds - RSS
Podbop - Listen to bands that visit your city (Eventful mash-up) - Audio
Podbridge - Metrics for usage of podcasts - Marketing
Podcastalley - Digg podcasts - Dig
Podcasterbater - Get your porn audio & video podcasts - Porn
Podcastfm - Publish pod & vod casts - Multimedia
Podcastpickle - Share podcasts & vidcasts - Multimedia
Podcastsearchservice - Find podcasts - Search
Poddater - Create vodcast & connect - Community
Podesk - Publish & promote your vodcast - Video
Podfeet - Find casts - Search
Podnova - Find podcasts - Search
Podolicious - Personalized podcast news - News
Podomatic - Create, find & broadcast podcasts - Audio
Podsafeaudio - Upload & share your music casts - Audio
Podscope - Find podcasts thru text search - Search
Podtrac - Advertise in podcasts - Marketing
Podzinger - Search podcasts - Search
Pointment - Zaplet 2.006 for scheduling appointments - Office
Pokerlistings - Review, rate & rank poker websites - Gamble
Polarrose*** - Help to make the visual web searchable (stealth) - Images
Polidiggs - Digg political news - Dig
Polldaddy - Create & publish polls - Survey
Pollground - Publish & participate in surveys - Survey
Polloo - Polls about happiness - Survey
Pollplaza~ - Collective polling - Survey
Pollpub - Create & share polls & contests - Survey
Ponyfish - Create feeds from any website - RSS
Pooln - Schedule your car pooling - Community
Pooxi - Upload & (revenue) share video - Video
Popcast - View & broadcast tv over ip (player) - Video
Poperti - Save your mp3 on a pop email account - Audio
Poperti - Enjoy music (and more) from your Gmail inbox - Multimedia
Popist* - Social networking - Community
Populationone - Your pixel and 6.5 billion other ones - Economy
Popurls - Folksonomied news - News
Pornalicious - Social porn bookmarking - Porn
Pornotube - A disgrace for the porn industry - Porn
Portableplaylist - List & listen to your sounds, anywhere - Audio
Poserfish - P2P betting, free - Gamble
Post282 - Create community blogs - Publish
Postcastsender - Upload, share & get alerts for podcasts - Audio
Postgenomic* - Share & rank life science knowledge - Knowledge
Posticky - Place, access & share notes (also mobile) - Office
Postr - Post bookmarks to many services - Bookmark
Postreach - Get your posting shadow-published on subject-relevant other blogs - Publish
Postsecret* - Publish & share secrets - Community
Postsecret* - Share your secrets thru sending in postcards - Publish
Powehousemuseum - Contribute to museum object folksonomy - Dbase
Powermap - Next level Google maps - Geo
Pptshare - Create, reduce size, organize & share presentations - Office
Praseus - Page rank based search - Search
Predixis - Discover, manage & enjoy music - Audio
Prefound - Search & share what you've found - Search
Presto - Send email & photos to people who don't have a computer - Publish
Previewseek*** - Byebye Google? (Coming back soon) - Search
Pricenoia - Amazon price comparison - Ecommerce
Pricheck - Check prices continuously - Ecommerce
Primomailer - CMS for email newsletters - Marketing
Printeranywhere*** - Use your friends' printers - Office
Prisonerlife - Prisoners community - Community
Processing - Share code for imaging, animations, sound - Software
Productwiki - Collaborative product info resource - Publish
Profcast - Record & publish your presentation - Office
Profilelinker - Bring in all your profiles here - Community
Programmableweb** - Web 2.0 reference website, main source on APIs and mash-ups - About
Programmermeetdesigner* - Partner matching for IT projects - Economy
Project360 - Organize your projects on the web or on your pda - Organize
Projectip - Recognizes anything on your computer - Software
Projectopus - Publish, share or sell music - Audio
Projectplace - Run & co-ordinate projects - Organize
Projectspaces - Work together - Organize
Promptu - Voice based search for all media - Software
Propsmart - Find housing (map mash-up) - Geo
Prosper - P2P lending - Economy
Protectmyphotos - Back-up your photos online - Store
Protolize - Digg web tools - Dig
Protopage - Personal portal - Portal
Prototype - JS framework - Software
Proworkflow - Manage your projects & time - Organize
Prweb - Push press content to over 100,000 media - News
PSFK - Share trends watched - Marketing
Psiphon* - Surf the web anonymously - Browse
Pubet - P2P filesharing (client) - Software
Publicloos - Share public toilets - Geo
Publish - Create feed from anywhere - RSS
Publishing2** - Web 2.0 from a publishing & marketing point of view - About
Pubsub - Search + profiled alerts - Search
Pulverati - Create & share RSS feed search - Search
Purevolume - Music community - Audio
Pushcrm - Web-based crm - CRM
Pushy*~ - Personal portal; also mobile - Portal
Putfile - Upload, rate, share & discuss multimedia - Multimedia
Putfwd - Store & exchange data - Store
Pxn8 - Manipulate & publish your photos - Images
Pytagor - Online desktop & collaboration tools - Portal

Update 070127.