Remix IDE

You can use the open-source tool Remix to develop contracts for Ubiq

Since smart contracts for Ubiq are written in Solidity, developers have the option to use a number of open-source tools that are apply to any EVM system. Among them is Remix, an integrated development environment that ships with the tools needed to write, test, debug and deploy contracts for Ubiq.

You can find up-to-date documentation for Remix HERE.

You can find the Remix IDE site to begin your contract development HERE.