HostsXpert!

HostsMan is a freeware hosts file manager and editor.

BlueLife Hosts Editor is a portable freeware hosts-file editor and allows you to easily add/delete, block, and update domain names to your hosts file.

PeerGuardian is a privacy oriented firewall application. It blocks connections to and from hosts specified in huge blocklists (thousands or millions of IP ranges). Its origin seeds in targeting aggressive IPs while you use P2P.

Gas Mask is simple hosts file manager for Mac OS X. It allows editing of host files and switching between them.

When an entry is toggled off, it is not commented out in the hosts file, but instead stored in the app's preferences storage. This means you will have to uncomment all your unused host entries and untoggle them in the prefpane if you want to use them. Comments are treated as comments and will never show up in the list of host entries!

BeeThink IP Blocker is a Windows IP Blocking program which controls one computer interacts with other computers over the network. It can be successfully used on Windows server machines, in a production environment, to easily ban unwanted IP addresses or visitors by country with Apache's .htaccess files. BeeThink IP Blocker is a lightweight firewall and the rules are based on IP address, port, protocol, and other TCP/IP factors.

iplist is a Linux application for blocking connections to and from a specified range of hosts using the netfilter netlink-queue library. iplist is an open source IP filtering program similar to PeerGuardian .

SwitchHosts! is an App for hosts management & switching.It is a free and open source software.

Saving your time when you switch domain-ip mapping between different environment.