The portable edition for DC++, can share files over the Internet without restrictions or limits. An open source client for the Direct Connect protocol. Direct Connect allows you to share files over the internet without restrictions or limits.
It is fully compatible with and supports connection to hubs using the earlier NeoModus Direct Connect (NMDC) protocol, but its primary purpose is to be a client for a new generation of file sharing using a protocol called Advanced Direct Connect (ADC).
DC++ is totally free of advertisements and has a nice, easy-to-use interface.
Firewall and router support is integrated and its easy and handy to use functionality like multi-hub connections, auto connections and resuming of downloads.

DC++ Portable Features:
1. Joins multiple hubs at the same time
2. List of bookmark-like favorite hubs and users
3. Shares large files and many files per your organization scheme
4. Tiger Tree Hashes (TTH) used for file integrity
5. Search across all (or selected) connected hub by type, size, or name
6. Resume of downloads, with optional search for alternate sources
7. Logging options and configuration for chat, private messages, downloads, and uploads
8. Autoconfiguration of UPnP routers
9. MAGNET link support for linking to specific content
10. Automatic and manual download priorities
11. Saving of users file lists for browsing and queueing
12. Translation into other languages by custom supplied gettext po language files
13. Segmented downloading

Structure of the Direct Connect network
The Direct Connect (DC) network is a decentralized network, made up of individual servers (hubs) that users join to share files. Users can search for files and download them from other users connected to the same hub. A hub only helps to find files and connect users; it does not store any files. File transfers are done directly between clients, in peer-to-peer fashion.

Every hub also acts as an instant messaging server. Users can chat with other users of the same hub using the main chat (visible to every user on the hub) or, alternatively, start a private conversation with a particular user. Some hubs also have special chat rooms for groups of people, such as having a chat only for operators.

Each hub is individually administered, and some hubs are built around sharing a particular type of content. Rules vary from hub to hub, but most have a restriction on the minimum amount and type of content a user may share (for example, some hubs disallow sharing of pornography). Hubs typically have operators (or ops) appointed by the actual owner of the hub to police these rules and ban offenders, as well as help new users.

There are two basic kinds of hubs. Public hubs are available to anyone who adheres to the rules and require no registration for connecting. Some allow you to connect, but require registration to search or download - this is a grey area. In contrast, private hubs always require user authentication at login, using a username/password combination. To gain access to these hubs, one must get registered through other channels, such as a web forum or a public hub maintained by the same people.

There are Hublists hosted by individual hublist servers to allow users to find hubs that they might like. These lists contain the name, address and description of each hub along with other data. Some big hublists try to contain almost all available hubs while others contain only a list of hubs meeting certain criteria, such as hubs in a specific country.

The license of this software is Free, you can free download and free use this file sharing software.