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Top : Software : Networking : Tools : Bandwidth

Pick of the Bunch: Command line Twitter Clients
Twitter is an extremely popular social network. Twitter, at its most basic, is a series of short online statements or 'tweets'. Twitter forces the writer to be extremely succinct - with only 140 characters (including spaces) to make each announcement.

(Read more)
Shelr is an open source utility that provides plain text screencasts for shell 'ninjas'. This tool lets you record/replay and publish your terminal on or other services. It works almost the same as script or ttyrec but adds some useful features. Read more


  • AstroFlow Bandwidth Management
    (commercial) AstroFlow Bandwidth Management is a bandwidth management solution that features reports and many configuration options.
    BW ACCT is designed to simply offer per IP bandwidth accounting using common tools on the Linux 2.4 Operating System. It relies on the packet and byte counters in the kernel firewall.
  • CBQ.Init GUI
    CBQ.Init GUI is a frontend to the CBQ.INIT script. It allows users to easily limit their bandwidth at the IP/port level.
  • Dummynet
    Dummynet is a flexible tool originally designed for testing networking protocols, and since then (mis)used for bandwidth management. It simulates/enforces queue and bandwidth limitations, delays, packet losses, and multipath effects. It also implements a variant of Weighted Fair Queueing called WF2Q+.
  • Flowgrind
    Flowgrind is a tool similar to iperf, netperf to measure throughput and other metrics for TCP and other protocols. It features some unique characteristics which are of use when exploring the idiosyncrasies of wireless mesh networks.
  • htb-gen
    htb-gen is an easy, scalable bandwidth management tool. You can set up/down portions of bandwith for each host or network that goes through your router/firewall. Priority traffic (Web, email, gaming, FTK, VOIP, and streaming) is preferred over junk traffic (Kazaa, emule, etc). Dynamic bandwith borrowing and reassignment is done betwen hosts thanks to htb boundaries. A Web frontend for config is avaible, so remote management is possible. It is bash-based, so it can be used in embedded routers/firewalls (wired/wireless).
  • HTB-tools
    HTB-tools Bandwidth Management Software is a suite of tools that help simplify the difficult process of bandwidth allocation, for both upload and download traffic, using the Linux kernel's HTB facility.
  • ifstat
    ifstat is a tool to report network interfaces bandwith just like vmstat/iostat do for other system counters.
  • Iperf
    Iperf is a tool to measure maximum TCP bandwidth, allowing the tuning of various parameters and UDP characteristics. Iperf reports bandwidth, delay jitter, datagram loss.
  • Ktctool
    Ktctool is a graphical interface for network bandwidth management in Linux. Ktctool is meant to be a graphical user interface to tc. tc is a part of iproute2 and controls Quality of Service support.
    MACTS is a traffic shaper that uses MAC addresses which are associated with users to classify traffic. This allows fair usage of bandwidth among many machines. Additionally, there is a stats monitor that can display text or generate graphs (CLI/CGI).
  • MasterShaper
    The MasterShaper is a Web application to control and manage network bandwidth and QoS (Quality of Service) easily with a Web browser. It uses iproute2 and the features of newer 2.4 and 2.6 Linux kernels (such as HTB, HFSC, CBQ, SFQ, ESFQ, NETEM, etc.) to manage inbound and outbound network traffic. MasterShaper also displays graphs about the current bandwidth distribution (created with jpgraph). The filtering mechanisms it supports are tc-filter and various iptables modules, such as TCP-Flags, TOS, l7-filter, and ipp2p.
  • nbwmon
    nbwmon is an ncurses bandwidth monitor.
  • NetHogs
    NetHogs is a small 'net top' tool. Instead of breaking the traffic down per protocol or per subnet, like most such tools do, it groups bandwidth by process, and does not rely on a special kernel module to be loaded. Read more
  • Netio
    Netio measures the net throughput of a network via TCP/IP.
  • netperf
    netperf is a benchmark that can be used to measure the performance of many different types of networking. It provides tests for both unidirecitonal throughput, and end-to-end latency. Read more
  • OpenTrafficShaper
    OpenTrafficShaper is an open source traffic shaping package for Linux. Features include user, group and IP based shaping, traffic classes and radius integration.
  • p2pshaper
    p2pshaper is a linux QoS script to ensure good latency and fairness on a network connection overloaded by filesharing applications. It also includes generic optimizations to improve fairness.
  • pchar
    pchar is a reimplementation of the pathchar utility written by Van Jacobson, formerly of Lawrence Berkeley Laboratories. Both programs attempt to characterize the bandwidth, latency, and loss of links along an end-to-end path through the Internet.
    PHREL is a Per Host RatE Limiter. It will track the rate of incoming traffic on a server and insert a chain into iptables when a configured threshold is crossed. The inserted chain may either rate limit or block the offending host for a period of time. The inserted chain is automatically removed when the offending host's traffic levels return to normal. PHREL is particularly well suited to protecting nameservers (DNS) from random hosts that flood requests, and to preventing SSH brute force login attempts.
  • pmacct
    pmacct is a network tool to gather ip traffic informations (source address, bytes counter and number of packets); data is stored in a in-memory table whose content could be retrieved by a client program via a local stream-oriented connection. Gathering packets off the wire is done relying over pcap library and promiscuous mode of network interfaces (one or more).
  • pyshaper
    pyshaper is a simple yet versatile program for managing your internet traffic in real time.
  • rocap
    rocap is an IP bandwidth monitoring system based on pcap. rocap was designed to provide an easy way to monitor bandwidth between hosts, group of hosts or group of subnets, in any combination.
  • SFSU Penaltybox
    SFSU Penaltybox is a solution to high network traffic in residence halls. It implements a bandwidth quota, penalizing the users who cause the most of the network congestion. Uses Packeteer Packet Shaper to limit bandwidth, and IP Audit for statistics.
  • Sjitter
    Sjitter is a command line client/server to measure jitter (based on RFC 1889), one way UDP delay, and bandwidth.
  • SuperShaper-SOHO
    SuperShaper-SOHO is a traffic shaping setup for DSL connections which prioritizes VoIP and interactive traffic, and makes sure P2P traffic doesn't saturate your uplink.
  • throttle
    throttle copies the standard input to the standard output while limiting bandwidth to the specified maximum.
  • tmetric
    tmetric is a tool to aid in determining the available bandwidth from one host to another.
  • TraffAcct
    TraffAcct is a network traffic accounting package designed to simplify the process of tracking and billing network usage.
  • Traffic Prioritizer
    Traffic Prioritizer is designed to run on a Linux router and prioritize users' traffic by their bandwidth consumption. It is aimed to shape the "bandwidth greedy" clients (P2P, YouTube, IPTV, etc.) so that the ones who are just browsing do not lack bandwidth.
  • Traffic Squeezer
    Traffic Squeezer is an open-source project which does network traffic payload compression on a Linux based network device, released under GNU General Public License.
  • trickle
    trickle is a portable lightweight userspace bandwidth shaper. it can run in collaborative mode (together with trickled) or in stand alone mode.
  • WANem
    WANem can be used to emulate wide area network conditions in a LAN environment. It can emulate network characteristics like Bandwidth, latency, loss, disconnection, duplication, reordering, asymmetric networks, etc. It is distributed in the form of a bootable CD.

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