eglises.org, an online searchable directory of evangelical churches in France (Annuaire Électronique des Églises Évangéliques). It is in French, but should be easy to follow even without knowing the language very much.
eglises.org

France Mission, a Christian Organisation working throughout many areas of France to evangelise and plant churches.
France Mission

FEF: Fédération Évangélique de France (The Evangelical Federation of France): On their web site you will find information about the people behind the FEF and the work with which they are involved.
Fédération Évangélique de France

Les Cèdres: Evangelical French Language School: An Evangelical Christian language school in the southern suburbs of Paris, France.
Les Cèdres

Passerelles ("Bridges") is a new tool developed by David Brown and France Mission. It is an integrated evangelistic course in French that can be used by ordinary French Christians to build effective bridges to their post-modern unchurched contemporaries. The web site is in French.
Passerelles

GBU - Groupes Bibliques Universitaires (Biblical Groups at Universities) This is the equivalent of Christian Unions in the British student world.
GBU - Groupes Bibliques Universitaires

Top Chrétien is a french language site with useful information about and links to sites that deal with the church and its work in France.
Top Chrétien 

Connaître Dieu ("Knowing God") is a web site that presents God, the Lord Jesus and the Gospel to its readers in French.
Connaître Dieu

AEF: Alliance Evangélique Française (The French Evangelical Alliance): On their web site you will find information about the people behind the AEF and the work with which they are involved.
Alliance Evangélique Française

AEEI: Alliance des Églises Évangéliques Interdépendentes (Alliance of Interdependant Evangelical Churches)
Alliance des Églises Évangéliques Interdépendentes

The Liebenzeller Mission has its international headquarters in the town of Bad Liebenzell, Germany. It is a missionary organisation with historical connections to the China Inland Mission, and has had missionaries involved with ministry and church planting throughout Normandy for many years.
The Liebenzeller Mission

The United Beach Mission - or Mission Vacances as it is known as in Europe - runs beach missions in the summer in various countries. In the past, UBM held a beach mission every summer in the town of Houlgate in Normandy.
United Beach Mission

The Christian Community Foundation of France An organisation in the USA that supports French Evangelical ministries in France.
Christian Community Foundation of France

Le Conseil National des Evangéliques de France (CNEF) The site of the National Council of French Evangelicals - the web site is in French.
Conseil National des Evangéliques de France