The declination of jeder as a noun (in substantival use) is identical with the one in adjectival use - in opposite to kein, which has a slightly different declination. Often they are used instead of jeder in adejctival use.

masculine feminine neutral Nominative jeder jede jedes   Genitive jedes jeder jedes   Dative jedem jeder jedem   Akkusativ jeden jede jedes

Alle is used very often as a synonym for jeder. Alle can only be used in plural form:

masculine feminine neutral Nominative alle alle alle   Genitive aller aller aller   Dative allen allen allen   Akkusativ alle alle alle

Again jeder and alle can be used similarly. Jeder is used only in singular, alle only in plural. The Genitive is almost never used neither with jeder nor with alle. Jeder in substantival meaning means everyone or everybody.

examples jeder / alle (masculine)

Nominative: Genitive: Dative: Accusative : Jeder weiß es. = Everyone / everybody knows it. Alle wissen es. = All know. practically not used Ich sage es jedem (einzelnen). = I tell everyone / everybody (every single one). Ich sage es allen. = I tell all. Ich sehe jeden (einzelnen). = I see everyone / everybody. Ich sehe alle. = I see all.

examples jede / alle (feminine)

Nominative: Genitive: Dative: Accusative : Jede will reich sein. = Everyone (everybody female) wants to be rich. Alle wollen reich sein. = All (female) want to be rich. practically not used Ich gebe jeder eines. = I give one to everyone / everybody (female). Ich gebe allen etwas. = I give it to all (female). Ich sehe jede. = I see everyone / everybody (female). Ich sehe alle. = I see all (of them female).

examples jede / alle (neutral form)

Nominative: Genitive: Dative: Accusative : Jedes will reich sein. = Everyone / everybody (neutral) wants to be rich. Alle wollen reich sein. = All want to be rich. practically not used Ich gebe jedem eines. = I give one to everyone / everybody (neutral). Ich gebe allen etwas. = I give something to all. (neutral) Ich sehe jedes. = I see everyone / everybody. (neutral) Ich sehe alle. = I see everyone / everybody. (neutral)