diff --git a/cli/autocompleter.go b/cli/autocompleter.go
new file mode 100644
index 00000000..27c59f94
--- /dev/null
+++ b/cli/autocompleter.go
@@ -0,0 +1,50 @@
+package cli
+
+import (
+	"strings"
+
+	"github.com/derekparker/trie"
+)
+
+// AutoCompleter autocompletes queries
+// into the REPL.
+// Implements AutoCompleter interface from
+// github.com/chzyer/readline
+type AutoCompleter struct {
+	coreFuncs *trie.Trie
+}
+
+func NewAutoCompleter(functions []string) *AutoCompleter {
+	coreFuncs := trie.New()
+
+	for _, function := range functions {
+		coreFuncs.Add(function, function)
+	}
+
+	return &AutoCompleter{
+		coreFuncs: coreFuncs,
+	}
+}
+
+// Do implements method of AutoCompleter interface
+func (ac *AutoCompleter) Do(line []rune, pos int) (newLine [][]rune, length int) {
+	lineStr := string(line)
+	tokens := strings.Split(lineStr, " ")
+	token := tokens[len(tokens)-1]
+
+	// if remove this check, than
+	// on any empty string will return
+	// all available functions
+	if token == "" {
+		return newLine, pos
+	}
+
+	for _, fn := range ac.coreFuncs.PrefixSearch(token) {
+		// cuts a piece of word that is already written
+		// in the repl
+		withoutPre := []rune(fn)[len(token):]
+		newLine = append(newLine, withoutPre)
+	}
+
+	return newLine, pos
+}
diff --git a/cli/repl.go b/cli/repl.go
index e7f05a24..da188b16 100644
--- a/cli/repl.go
+++ b/cli/repl.go
@@ -3,14 +3,17 @@ package cli
 import (
 	"context"
 	"fmt"
-	"github.com/MontFerret/ferret/pkg/compiler"
-	"github.com/MontFerret/ferret/pkg/runtime"
-	"github.com/MontFerret/ferret/pkg/runtime/logging"
-	"github.com/chzyer/readline"
 	"os"
 	"os/signal"
 	"strings"
 	"syscall"
+
+	"github.com/MontFerret/ferret/pkg/parser/fql"
+
+	"github.com/MontFerret/ferret/pkg/compiler"
+	"github.com/MontFerret/ferret/pkg/runtime"
+	"github.com/MontFerret/ferret/pkg/runtime/logging"
+	"github.com/chzyer/readline"
 )
 
 func Repl(version string, opts Options) {
@@ -23,6 +26,11 @@ func Repl(version string, opts Options) {
 		Prompt:          "> ",
 		InterruptPrompt: "^C",
 		EOFPrompt:       "exit",
+		AutoComplete: NewAutoCompleter(
+			append(
+				fqlLiterals(),
+				ferret.RegisteredFunctions()...,
+			)),
 	})
 
 	if err != nil {
@@ -138,3 +146,13 @@ func Repl(version string, opts Options) {
 		}
 	}
 }
+
+func fqlLiterals() (literals []string) {
+	lns := fql.NewFqlLexer(nil).LiteralNames
+
+	for _, ln := range lns {
+		literals = append(literals, strings.Trim(ln, "'"))
+	}
+
+	return
+}
diff --git a/pkg/compiler/compiler.go b/pkg/compiler/compiler.go
index 54100ba3..2ca68654 100644
--- a/pkg/compiler/compiler.go
+++ b/pkg/compiler/compiler.go
@@ -1,12 +1,13 @@
 package compiler
 
 import (
+	"strings"
+
 	"github.com/MontFerret/ferret/pkg/parser"
 	"github.com/MontFerret/ferret/pkg/runtime"
 	"github.com/MontFerret/ferret/pkg/runtime/core"
 	"github.com/MontFerret/ferret/pkg/stdlib"
 	"github.com/pkg/errors"
-	"strings"
 )
 
 type FqlCompiler struct {
@@ -104,3 +105,10 @@ func (c *FqlCompiler) MustCompile(query string) *runtime.Program {
 
 	return program
 }
+
+func (c *FqlCompiler) RegisteredFunctions() (funcs []string) {
+	for k := range c.funcs {
+		funcs = append(funcs, k)
+	}
+	return
+}