An indicator is the most important tool for technical analysis. Decisions about how and when to trade can be made on the basis of technical indicator signals. The essence of technical indicators is a mathematical transformation of a financial symbol price aimed at forecasting future price changes. This provides an opportunity to identify various characteristics and patterns in price dynamics which are invisible to the naked eye.
In accordance with the functional properties, indicators can be divided into two types: trend indicators and oscillators. Trend indicators help to identify the price direction and find trend reversal moments synchronously or with a delay. Oscillators allow to define market reversal points in advance or simultaneously.
A separate category includes indicators calculated based on volumes. For the Forex market, 'volume' means the number of ticks (price changes) within a time interval. For stock securities volume means the volume of executed trades (in contracts or money terms).
Another category is Bill Williams' indicators. They are included into a separate group because they are part of the trading system described in his books.
The above categories include built-in indicators of the trading platform. 38 indicators are available in the platform. A large number of custom technical indicators can also be used in the platform. You can download source codes of various free applications from the Code Base. Thousands of ready-to use applications for technical analysis and automated trading are also available on the Market.