As far as I know, Multi-Domains from WPMUDEV is the only plugin which works flawlessly with the lastest version of WordPress. It is BuddyPress compatible, has a single signon and even a multi-subdomain feature (blog1.subdomain.site.com, blog2.subdomain.site.com).
There is a free alternative, but it has not been updated for the latest version of WordPress (the author is not currently available to do it) and it is not as full featured as the wpmudev plugin.
http://wordpress.org/extend/plugins/yet-another-multi-site-manager/
You may want to download it and modify it to fix the issues with WordPress 3.0.
Related Posts:
- How to use WordPress Multisite With Different Domain Names?
- Setting up a wordpress network with third level domains
- How will self-hosted WordPress work with Google Page Speed Service?
- multisite: use a virtual subfolder for subblogs
- How to use alias domain for multisite installation?
- How To Provide Sub-Blogs Their Own Domain Names?
- WordPress Multisite. Can domain be used instead of subdomain?
- domain mapping confused about sunrise
- WordPress multisite with domain mapping and virtual host on local with fake domain
- Changing Multisite URL after the subsite has been in use
- Jetpack Blog Subscriptions on Multisite [closed]
- How do I use different domain for subdomains in WP Multisite?
- Multiple Multisite networks on the same domain?
- Subdomain and subdirectories together in one installation
- How to configure DNS If I use the plugin yet-another-multi-site-manager?
- Multisite Subdomain Using More Resources Than Others?
- How to properly force https and www on multisite with Apache HTAccess
- Alias domain to Multi-site installation in Apache
- WordPress multisite with multiple parent domains
- Migrate a WP website from a single-server single-domain to a multi-server multi-domain installation
- WP Multisite – domain mapping to domain.com and separate site to domain.com/help
- How do I use different URLs in a single WordPress installation?
- How to redirect one page on the subdomain
- How to change the parent Domain Name in Multisites Project?
- Can you install / activate the multisite when the install is in a subfolder?
- WordPress Multisite Strange Redirect on Primary Site
- Multisite – Looking for ideas to best manage a main site change
- Multisite Redirection to new domains
- Link structure, WordPress IIS
- Show content of other domain inside WordPress
- Multisite redirecting wrong when without WWW
- How Can I Change The Name Of My Subdomain in WordPress Multisite
- Multisite: Redirect to appropriate domain if subdomain doesn’t exist
- Install multisite wordpress on a subdomain and map to top level domains
- Multisite – One Site with multiple URLs
- Different Domains in Multisite Setup
- Multisite on single wordpress
- Multisite configuration for multiple domains
- How can I map the primary domain for subsite as subdirectory for another domain?
- Folder structure when using multiple domains with WordPress
- Moving wordpress multi to different domain and vhost – cannot log in and menu problems
- Is there something I need to know in order to use WordPress on foreign (Swedish) TLDs?
- WordPress multisite installation subdomains not working properly
- Serve theme and plugins assets from correct domain on multi-domain multisite
- Website creation for multiple clients but from a single account on multiple host name
- After switch domain, some parts of my site still point to my old domain
- multiple domains point to same site on WP-MU
- Can assign a new domain to a site in a multisite?
- Create new multisite from existing and keep domain?
- new WPMS site not working / Q setting up new site/subdomain
- How to add WordPress site to multisite network when both are addon domains
- New domain in multisite environment
- How To Change the URL of a WordPress Multisite
- Using www along with non-www for main domain in multisite installation
- Multiple domains for with a single instal
- Multisite redirect loop for a single www domain
- Swap domains of two sites with each other in multisite
- Sitemap Plugin for WordPress Network
- Which is the recommended method to transfer a wordpress site to wordpress Multisite?
- Hierarchical Page Listing of all Pages in a Multisite Network
- Make default new sites https (multisite)
- Sharing Header Components Across Multisite
- How to get a user role of a specific blog in multisite?
- Issue converting single site to multi-site – blogs.dir folder not created
- Logout issue with new Domain on WP Multisite
- Get users primary blog URL in MultiSite
- Make WordPress Search for Both Main Domain and Subdomain
- Multisites, upload issues, and iOS!
- Multisite new sites not found(404), main site still works [closed]
- How to get option values set from all sites within a Multisite setup?
- How to host blog on separate domain from main site
- How to use a Wildcard SSL with WordPress Network?
- Migrating wordpress multisite and domain mapping plugin
- WordPress Multisite – Can 2 domains share a database of users?
- Can you create a local wordpress network / multisite install on a mac with subdomains?
- How to solve this issue
- What is the way to share data between sites in a multisite
- ERR_TOO_MANY_REDIRECTS when i config my subdomains
- Run additional service on domain with WordPress Multisite?
- Development of new theme and rollout on multisite
- How to show only blog-domain instead of the whole permalink in the loop
- Multiple subsites in a single wordpress installation
- How to sync roles across Multisite?
- Multisite Subdirectory Site Dashboard redirect loop
- WordPress Multisites or Multiple WP Single sites?
- Is it possible to disable html code error auto fixing feature by wordpress 4.9.1?
- User registration is currently not allowed
- $_SERVER[‘SERVER_NAME’] in WP_SITEURL
- WP-Cli Error When Mapping Multisite Subdomain
- WP Multisite Sub-Domain Error
- Should i use multisite for my business?
- WordPress Network with SSL for multiple domains
- Nginx rules for subdomain multisite install (Bedrock)
- WP Admin Panel for Multi-site install not loading JavaScript for one Subdomain
- multisite detect subsite blog number
- How to Create WPMu New User?
- Is it possible to create a login for restricted visibility?
- multi-language multi-site with REST API
- How to make Multisite global login that redirects to correct subsite after login
- Advice on WP site structure using multisite