OwnCloud
Owncloud is a centralized space to store files and documents. You need not download your personal data to a server like google docs closed since all data is under your control.
The access to this space can be done by WebDAV from Linux, Mac, Windows or directly from the web interface.
Data transfer is secure via SSL you can do with PHP.
This first version has many features of bases but the next version will store more stuff (storage, contacts, emails, metadata ...)
Google Wave Notifications
Remember Google Wav
e? No, not Google Buzz — Wave, that other social information pump that Google launched last year. It’s hard to blame you if you don’t. While Google’s goals are ambitiouswith Wave, many users couldn’t figure out what to do with it, or why they needed it in their lives. Perhaps more importantly, it was basically impossible to know if someone was talking to you in Wave unless you had it open all the time. Not anymore.
Read the full article on techcrunch.com
Test your newsletters – EoA
Do you build html newsletters ?
Are you tired by retesting and retesting again and again on a lot of mail clients ?
This website is made for you.
I use it each time I build a newsletter.
Email On Acid allow you to simulate your newsletter on all known mail clients, and show you the result
Here's a screen of the free tests results page
Official website
PHP – Hide your emails
Limit the number of spam, in heaven remove them totally is the dream of each of us on the net. Maurits van der Schee has written a PHP function to cloack your email on your websites.
This is here
Email Geolocation
If you haven’t already tried our post by email feature then it makes blog publishing as simple as sending an email. Configure your blog, write an email, and we’ll do the rest. You can add photos and videos in your email and they’ll all be included, regardless of whether you send them from your home computer, your office, or a cellphone.
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WordPress.com : New blog subscription
There are many ways of reading WordPress.com blogs and we’ve now added another: email subscriptions.
This is a very simple way for your readers to subscribe to your blog and receive updates by email. Anyone can subscribe, whether they have a WordPress.com account or not. All you need to do is add the Blog Subscription widget to your blog and then you and your readers are ready to go.
So. If you have a wp.com blog, run to it 
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