There are many Buddhist scripts that are originally compiled in Pali. These scripts have been translated to many languages: Sinhala, English, Chinese, etc.  Among many thousands of sutras and scripts the below are the most commonly known and read.

After the Final Extinction (the great passing or the Parinirvana) of the Buddha, and the cremation of his body, the community of monks chose five hundred Arahants ('worthy ones', 'perfected ones') to work together to compile the doctrine and the discipline, in order to prevent the true doctrine from being submerged in false doctrines.

Each of the recensions of the Vinaya which narrates how one of the senior monks, Mahakasyapa, presided over this assembly, which worked systematically through everything the Buddha was remembered to have said and produced an agreed canon of texts embodying it. The versions differ over the details but agree in broad outline.

The Arahants met in Rajagrha, since that great city could most easily support such a large assembly for several months. The organization of the Buddhists tended to center on great cities as it was apparently not possible in any other way to convene a meeting large enough to be authoritative for the entire community, given its democratic constitution.

• first pitaka (Vinaya Pitaka) - the discipline
• second pitaka ( Sutra Pitaka)-the doctrine
• third pitaka (Abhidhamma) - buddhist psychology and special teaching

Extract from "Indian Buddhism" by A.K. Warder

An outline of the Pali Buddhist Canonical Scriptures of the Theravada School. The is a unique work as it is probably the only material that deals in outline with the whole of the Pali Buddhist Tipitaka

The Tripitaka is the sole canonical text in Theravada Buddhism. The baskets are divided by subject matter.

First basket -Discipline basket (Vinaya Pitaka)

This set out the rules and guidelines for living the monastic life of the sangha. It focuses first on the 227 regulations for monks (Bhikkhus), which concern everything from basic morality to robe-making, the additional rules for the nuns (Bhikkhunis), and then on guidelines for interaction between the monks and nuns and the laity.

Second basket-Discourse basket (Sutra Pitaka)

This contains records of the Buddha's teachings and sermons. These discourses of the Buddha present matters of theology and moral behavior for all buddhists.

Third basket - Special teachings (Abhidharma Pitaka)

This is the miscellaneous collection of short writings containing everything from songs and poetry to stories of the Buddha and his previous lives. The Dharmapada, is one of such text; it contains simple discussions of key buddhist concepts based on the Buddha's daily life.